2021 Top Saltwater Aquarium Kit Reviewed and Compared

There are over 60 colourful and unique species of saltwater fish, so it’s no wonder why marine tanks are so popular among fishkeepers.

If you’re unfamiliar with keeping marine fish, you might not know what equipment and accessories you need.

I was in a similar boat when I first started out, but a saltwater aquarium kit completely eradicated my worry and uncertainty.

Most kits offer most or some of the equipment you need to begin a saltwater tank, saving you both time and money.

Thinking of purchasing a saltwater tank kit? stick around, as below I look at some of my top choices to help you find the best deals.

Best Value

Fluval Sea Evo V

An affordable but reliable aquarium kit with a stylish modern design.

Fluval Sea Evo V

Saltwater tanks can be pricey, but the Fluval Sea Evo V is a great budget-friendly choice due to its affordable price.

It also has all the basic equipment you need to start your saltwater journey.

Editor’s Choice

SCA 50 Gallon Starfire Glass Aquarium

An awesome looking tank that comes with all the equipment you need for keeping saltwater fish.

SCA 50 Gallon Starfire Glass Aquarium

The SCA 50 Gallon Starfire Glass Aquarium is my personal favorite kit due to its striking design.

It comes with all the equipment you require for keeping marine fish, including a sump, protein skimmer, filtering media, and even a stand.

Best Saltwater Aquarium Kits

Top Pick

Coralife LED Biocube Aquarium

A fantastic starter aquarium with a compact size that makes it easier to maintain than large saltwater aquariums.

Coralife LED Biocube Aquarium

First up is the Coralife LED Biocube Aquarium, sporting a sleek and refined appearance that’s sure to complement your aquascape.

It’s a fantastic starter aquarium as it’s not overly big, which makes it easier to maintain than large saltwater aquariums.

It also won’t take up a huge amount of space.

Capacity

But even though it’s compact in size, it can still hold up to 16 gallons of water so you have a few different stocking options. 

Personally, I think a few neon gobies would look stunning in this tank.

The aquarium kit comes with built-in filtration that’s simple to set up and clean.

It’s built into the back of the aquarium so it’s out of view, allowing you to create a more natural aquascape if you so wish. 

Filtration and LED

The filtration system has a quiet submersible pump, alongside dual intakes and an adjustable return nozzle so you can change the power of the flow. 

Another great feature of the Coralife Biocube is the LED lighting which is conveniently built into the hood.

It has an integrated 24-hour timer so you don’t have to manually turn the lights on or off.

Lighting Options

There are 3 lighting channels that offer different lighting options: bright white, sparkling blue, and colour enhancing. This allows you to change the atmosphere by just switching to a different channel.

And that’s not all, the lights have automatic 30-minute sunrise/sunset and 60-minute moonrise/moon set functions to simulate a natural day and night cycle for your fish.

LED

My main gripe with this aquarium package is the short lifespan of the LEDs, which seem to burn out after a few months. The lighting system in general can be a bit unreliable as it can break prematurely.

Specs

  • Dimensions: 15” x 16.75” x 17.5”
  • Product Weight: 1.37 lbs
  • Color: Black
  • Capacity: 16 G

Pros

  • Dimensions: 15” x 16.75” x 17.5”
  • Product Weight: 1.37 lbs
  • Color: Black
  • Capacity: 16 G

Cons

  • Lighting system can break after a short time

Best Value

Fluval Sea Evo V

An affordable but reliable aquarium kit with a stylish modern design.

Fluval Sea Evo V

Next up is the Fluval Sea Evo V Saltwater Kit, an excellent marine tank that won’t break the bank.

Design

In addition to being affordable, the aquarium has a stylish honeycomb design that looks super modern.

This design also hides the rear aquarium filtration compartment and the water line, which gives your fish more swimming space. While the aquarium can only hold 5 gallons of water, it’s a good pick if you need a nano glass tank. 

Your stocking choices might be a little limited, but it should be adequate for a few small saltwater shrimp species like anemone shrimp.

Filter

The glass tank kit comes with 3-stage filtration with large mechanical, chemical, and biological filter media to keep your water sparkling clean.

There’s an easy-feed door on the canopy too, allowing you to feed your fish without getting your hands wet.

LED

Last but not least, the kit includes a high-output LED light with an aluminium, waterproof casing.

It has a touch-start day and night illumination so you can adjust the output for daytime and nighttime use. 

Despite its positives, this tank can have a couple of issues. Firstly, the filtering device can be a bit on the weak side. And secondly, the lamp can stop working after a short period.

Specs

  • Dimensions: 24.5” x 11.8” x 16.3”
  • Product Weight: 11 lbs
  • Color: Black
  • Capacity: 5 G

Pros

  • Nano size – ideal for beginners!
  • Honeycomb design to keep the filter hidden
  • Includes filter media and a 3-stage filter
  • High-output LED light

Cons

  • Filtering unit isn’t very strong
  • Light can stop working prematurely

Editor’s Choice

SCA 50 Gallon Starfire Glass Aquarium Kit

An awesome looking tank that comes with all the equipment you need for keeping saltwater fish.

SCA 50 Gallon Starfire Glass Aquarium Kit

My personal favorite marine tank is the SCA 50 Gallon Starfire Glass Aquarium, not just because it looks phenomenal, but also because it comes with all the equipment you need for keeping saltwater fish.

Design

The tank is completely rimless, which makes it look ultra sleek and sophisticated. It has a capacity of 50 gallons, giving you a lot of options when it comes to fish. You could house a variety of fish species in this aquarium or opt for a species-only setup. 

Features

You get a sump with 3 chambers with the kit, as well as a protein skimmer and return pump. The protein skimmer is useful for improving the quality of your water.

Other accessories such as tubing, media, and bulkheads are also included for a quick and easy setup. 

Cabinet

One of the aspects that sets this marine aquarium kit apart from some of the kits I’ve looked at is it comes with a cabinet.

Now you don’t need to purchase a separate aquarium stand or find a strong surface in your home you can put your tank on!

The cabinet has dual opening doors and is relatively spacious, allowing you to store all your fish tank equipment inside and out of view.

Quality

However, some of the equipment that comes with this aquarium kit can be a bit mediocre quality wise, including the outflow box and return pump. 

Putting the tank together can also be fiddly as some parts such as the tubing don’t attach easily.

Specs

  • Dimensions: 24” x 24” x 20”
  • Color: White
  • Capacity: 50 G

Pros

  • Rimless design for a modern look
  • Spacious enough for many marine species
  • Comes with all the equipment you need
  • Includes a cabinet

Cons

  • Some of the equipment and accessories included are not the best quality

BioCube LED Tanks and Combo Kits

An aquarium from Coralife that comes with all the things you need to start fishkeeping. It also includes a cabinet for you to store accessories.

BioCube LED Tanks and Combo Kits

Next up is the BioCube 32 Gallon Tank/Stand Kit, a complete package for starting a saltwater fish tank.

Alongside a sturdy 32-gallon aquarium, the kit includes a stand, hydrometer, and algae magnet. 

The stand features a storage compartment for you to store all your aquarium tools inside, allowing you to keep all your supplies out of sight.

Filter

It has a built-in filtration system, as well as a smooth hood with bright LED lighting. The latter has an integrated 24-hour timer with 3 different channels.

It even has automatic 30-minute sunrise/sunset and 60-minute moonrise/moonset functions to give your fish a natural day and night cycle.

Capacity

Although the Biocube 16-gallon aquarium I wrote a review on earlier is a great option, the BioCube 32 Gallon Tank/Stand Kit is larger and comes with a lot more aquarium supplies.

If you can afford to spend a little extra on an aquarium kit, the BioCube 32-gallon is worth considering as it saves you time searching for aquarium supplies. Everything you need is in one handy package! 

Warranty

However, this aquarium complete kit can occasionally crack or leak within a year of use. Fortunately, it comes with a 1-year warranty so you can easily get this issue sorted out if it occurs.

Specs

  • Dimensions: Not Specified
  • Product Weight: Not Specified
  • Color: Black
  • Capacity: 32 G

Pros

  • Complete kit – includes stand, magnet, and hydrometer
  • Built-in filtration
  • LED lamp with integrated timer
  • Storage compartment on stand to store aquarium supplies

Cons

  • Aquarium can break or leak within a year of use

Fluval Sea Flex Saltwater Aquarium Kit

A quality aquarium kit with a stylish design but at an affordable price.

Fluval Sea Flex Saltwater Aquarium Kit

This 9-gallon Fluval Flex Aquarium Kit is another quality glass fish tank at an affordable price, bringing the sea right to your home. Not only does the curved design of the aquarium look stunning, but it comes with a wide range of unique features. 

Lighting

I really like the lighting system on this aquarium as it provides 36 white and 3 RGB adjustable 1900 LUX LEDs that are completely adjustable, creating a beautiful shimmery effect. The dimmable 7500K lamp also promotes plant growth!

However, the light might not be sufficient for coral growth as it doesn’t contain enough blue hues. This can be easily rectified by purchasing a separate light online or at your local fish store.

Light Effects

On the plus side, you can choose from over 80 color blends and multiple special effect options like storm and cloud cover.

All of these settings can be controlled via a handy remote, which is extremely convenient! 

In addition to its advanced lighting system, the tank includes powerful filtration hidden in the rear compartment to keep your water crystal clear without being an eyesore.

Filter

It has multi-directional 61 GPH dual outputs so you can easily change the flow of the unit, ideal for fish who need a slower or faster water current. You get mechanical, biological, and chemical media with the kit too!

My main gripe with this glass aquarium kit is that the hose connecting the pump to the filtration housing is a little short, making assembly a bit difficult. Additionally, the compartment at the back can be hard to clean. 

Specs

  • Product Weight: 11.02 lbs
  • Color: Black
  • Capacity: 9 G

Pros

  • Unique curved design
  • Comes with multi-stage filtration and media
  • Advanced lighting system which can be controlled via a remote

Cons

  • Hose connecting pump to back compartment is a bit short
  • Back compartment can be hard to maintain

Aqueon Aquarium Starter Kit with LED

A starter aquarium with a lot of accessories included. All you need to do is decorate it after the setup

Aqueon Aquarium Starter Kit with LED

Last but not least is the Aqueon Aquarium Starter Kit, a solid pick for any beginner new to keeping sea fish.

Accessories

With the package, you get a 20-gallon glass tank, LED hood, QuietFlow power filtration system, submersible preset heater, medium cartridge, water conditioner, fish net, thermometer, fish food sample, and even an assembly guide.

That’s a lot of accessories for your money. Complete your sea haven with some decorations like live rock, plants, and some corals!

Filters

The filtering unit is quiet so you can enjoy your tank without any distractions. It also has a light indicator that flashes red when it’s time to change the media cartridge, which is a useful extra.

I like the low-profile LED hood as it’s not too bulky, giving your tank a sleek and simple appearance.

The lamp has white LED bulbs which, while not sufficient for growing corals, illuminate your tank nicely.

Heater

The preset heater is a great addition for keeping your water at the perfect temperature. It’s set to consistent 78 degrees Fahrenheit, which is ideal for most saltwater species.

Now you never need to worry about your water being hot or too cold!

Quality

Even with all its great features, the Aqueon Aquarium Starter Kit doesn’t include the best quality equipment.

The filtering system is a little weak for the capacity of the tank and the lights don’t come with a splash guard. 

This could result in water getting into the lights, affecting their longevity and effectiveness. You might want to purchase these separately from online services or your local fish store.

Specs

  • Dimensions: 24.5” x 12.5” x 19.5”
  • Product Weight: 31.8 lbs
  • Color: Black
  • Capacity: 20 G

Pros

  • Comes with a lot of accessories like food, fish net, thermometer, and water conditioner
  • Preset heater keeps your water at the ideal temperature
  • Quiet filtering unit with a light indicator so you know when to change the medium cartridge
  • Vibrant LED lights

Cons

  • Some of the equipment isn’t the best quality

What’s a Saltwater Aquarium?

A saltwater aquarium is a tank that houses marine species of fish, invertebrates, and plants.

Marine plants and animals originate from the ocean and therefore require saltwater to survive. 

What’s a Saltwater Aquarium Kit?

Nano Saltwater Reef Aquarium
Nano Saltwater Reef Aquarium

A saltwater aquarium kit is a product that contains all or some of the equipment you need to start a marine tank.

A kit normally contains a tank and accessories such as a lamp, filtration unit, filtration media, and sometimes a heater.

It’s a great option for beginner hobbyists as it cuts down on the number of tools and equipment you need to purchase from your local pet store.

What Is the Best Size Tank for Saltwater Fish?

Bigger is always better when it comes to marine aquariums. Larger enclosures allow you to own more species of fish.

With smaller habitats, your stocking choices are pretty limited as many marine species need enclosures with a lot of space.

Larger aquariums also means there’s more room for error, which is useful when you’re just starting out.

A big ecosystem can handle fluctuations in water parameters more than a small one. 

Types 

Full/Complete

Full/complete saltwater aquarium kits come with everything you need to begin a marine aquarium.

They will normally come with a tank, filtration system and medium, light, heater, sand or substrate, protein skimmer, and sometimes a sump.

Partial

Partial saltwater aquarium kits provide you with the bare essentials for keeping sea species. They typically include a tank, filtration system, light, and sometimes medium and a few other extras.

Types of Saltwater Enclosures

Fish Tank With Tropical Coral Reef Aquarium
Fish Tank With Tropical Coral Reef Aquarium

FOWLR

FOWLR tanks are aquariums that are fish-only with live rock.

Live rock refers to the rocky formations that house organisms and algae.

These organisms are helpful for establishing a plentiful supply of good bacteria that aid with the cleanliness of your aquarium water.

Fish-Only

Fish-only tanks are best for beginners as all you need to worry about is fish.

You don’t have to cultivate live rock or meet the specific water and lighting requirements of corals. 

Additionally, a fish-only tank is a lot cheaper to run than other types of marine fish tanks. Corals and live rock are normally very expensive, even if they’re on sale.

The startup costs of a reef aquarium can be pretty high.

Setup

That said, fish-only aquariums can take longer to get up and running. Aquariums with live rock and corals have a larger quantity of good bacteria and organisms to kickstart the cycling process.

Reef

Reef aquariums are the closest you can get to having a slice of the sea right in your home. They contain reef-safe species, corals, and live rock.

This type of aquarium is the hardest to maintain as corals require a lot of care to keep alive and healthy.

Lighting Requirement

Not only do they require pristine water conditions, but they also need adequate lighting for growth.

They need a full spectrum of light that consists mostly of blues with some reds, yellows, and oranges.

TIP

You should aim for 3.5 watts per gallon of water for the majority of soft types and 4.5 watts per gallon of water for hard types.

What Equipment Do I Need for a Saltwater Aquarium?

Aquarium Set Up
Aquarium Set Up

Aquarium/Tank

First thing’s first, you’ll need an aquarium to house your fish – Make sure you know the specific care requirements of the fish species you’d like to own.

Some species do well in small aquariums, while others require huge enclosures. 

TIP

Remember to check the adult size of the fish too – many species are small while young but rapidly grow into giants!

Sea Salt Mix

Sea salt is used to increase the salt content of your water so it can accommodate marine life.

Make sure you use a sea salt mix intended for marine enclosures. Table salt or aquarium freshwater salt can’t be used as it doesn’t contain trace minerals or elements.

Live Rock

Live rock provides a home for algae and organisms, which helps promote the growth of good bacteria. Algae is also a food source for some species of fish and invertebrates. 

Substrate/Sand

Substrate offers a surface area for good bacteria to colonize on.

Some types alter the chemistry of the water such as crushed coral sand, which contains calcium. 

If you have burrowing species of fish, you should use a soft substrate such as aquarium sand or aragonite sand as this is easier to dig through.

Personally, I use aragonite sand in my setups as it has buffering capabilities and looks natural.

Lighting

Blue LED Light Panel
Blue LED Light Panel

You’ll need lighting to replicate a natural day and night cycle for your fish, as well as to grow any aquatic plants. 

Hydrometer

A hydrometer measures the specific gravity (salt levels) in your water. You’ll need this device to ensure your water has the right content of salinity.

For most saltwater species, a specific gravity between 1.020 and 1.026.

Protein Skimmer

A protein skimmer removes Dissolved Organic Compounds from your water before they are processed by your filtering unit. 

Although optional, a protein skimmerhelps your filtering unit run more smoothly and efficiently, particularly in aquariums with large fish species or high numbers of invertebrates.

Filters

Filters aren’t optional in a tank – they help keep the water clean and healthy. A filtering device helps keep ammonia, nitrite, and nitrate levels low so they don’t impact your water quality.

A lot of aquarists use a wet/dry filter, sump, or refugium.

Wet/Dry Filter

A wet/dry filter uses a felt filtering sock for bio medium like bio balls and large particles. It’s best used for fish-only setups.

Sump

A sump is similar to a wet/dry filter but uses live rock instead of bio medium. It also has a storage compartment for a heater, protein skimmer, media reactors, etc. It’s normally used for reef setups.

Refugium

Lastly, a refugium is a modified sump that has a primary area for reef mud substrate and growing macroalgae.

All of these units need an overflow chamber and drain pipe. The water from your aquarium will overflow into the sump. A return pump then deposits the water back into your aquarium.

How to set up the ULTIMATE Refugium!

Powerhead

A powerhead helps with water circulation in your tank, which improves the oxygen levels in your water.

This device also makes it easier for particulates and bits of debris to be filtered out.

Heater

Marine livestock originates from tropical or temperate waters, so you’ll need to ensure the temperature of your tank water is warm enough.

A heater helps increase the temperature of your water and keep it consistent.

Even if you live in a warm climate, I’d still recommend using a heater to prevent any temperature fluctuations.

TIP

There are a few types of heaters you can use, including submersible and immersible ones.

Thermometer

A thermometer helps you keep an eye on the temperature of your tank water.

It can also help you indicate if there’s an issue with your heater, allowing you to quickly intervene if the temperature drops too low or high.

Air Pump and Air Stones

Air bubbles in a marine tank can cause salt creep, so you don’t need air stones or an air pump unless you’re running equipment that needs them like a counter-current protein skimmer.

Salt creep occurs when water splashes onto an object and evaporates, leaving behind salt crystals.

Test Kits, Additives & Supplements

Live rock and reef aquariums require calcium to survive. Some other additives and supplemental vitamins may be helpful for certain species, such as iodine for crustaceans.

Maintenance Tools & Supplies

Man Cleaning a Fish Tank
Man Cleaning a Fish Tank

If your tank kit doesn’t already include maintenance tools, you’ll need buckets for water changes, tank cleaning equipment like an algae scraper and siphon hose, and nets for catching tank inhabitants. 

Final Thoughts

Top Pick

After looking at a variety of saltwater aquarium kits, I think the best one overall is the Coralife LED Biocube Aquarium LED. It has a sleek and compact design, so not only does it look striking, but it also doesn’t take up too much space.

I like the wide range of features it includes, such as a built-in filtering unit and advanced LED lamp. The latter has 3 different channels to create the perfect atmosphere for your tank, as well as a 24-hour timer for convenience. 

Best Value

If you’re looking for a more affordable option, I think the Fluval Sea Evo V Saltwater Fish Tank Aquarium Kit is a solid choice as it has a stylish design and comes with an LED lamp and multistage filtering unit.

Editor’s Choice

That said, my personal favorite saltwater aquarium kit is the SCA 50 Gallon Starfire Glass Aquariums Complete Package. It’s spacious and includes all the items you need such as a protein skimmer and stand.

Feel Free To Share Your Thoughts!

I hope I helped you find the best saltwater aquarium kit so you can experience the sea in the comfort of your home.

Which saltwater aquarium kit is your favorite? Let me know in the comments!

And if you’re after some more aquarium equipment reviews and care guides, take a look at our other posts.

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Mollie Newton
Mollie Newton
Founder of PetMeTwice. I love all types of animals from fish to fluff-balls! I also enjoy writing short stories and helping train animals 🤩