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Fluval

Fluval Evo XII Saltwater Aquarium Kit, 13.5 Gal. – Saltwater Fish Tank with Reef-Capable LED, Efficient 3-Stage Filtration and Seamlessly Integrated Hardware

  • Based on 1,032 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Mar 31
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Features

  • 13.5 gallon glass aquarium for saltwater fish
  • Stylish honeycomb design conceals rear aquarium filter compartment and aquarium water line while looking ultra modern
  • Powerful 3 stage filtration with oversized mechanical, chemical, and biological Fluval filter media
  • Multifunctional canopy with easy feed door
  • The 13.5 gallon (52 L) fish tank is 22 L x 11.5 W x 15 H inches (56 x 29 x 38 centimeter); Wattage: 16 W; Lumens: 1383 lm

Description

Do not let its size fool you, the Fluval Sea EVO Fish Aquarium packs the same performance features as a tank several times its size, but is small enough to fit on any desk or countertop. A super bright 14000 K LED aquarium light provides optimal conditions for healthy coral growth, color, and conditioning, while powerful 3 stage water filtration with oversized media delivers amazing water quality. Now you can finally enjoy the saltwater fish tank hobby for less money, less effort and less space required! Go ahead and grow your mini reef tank with confidence and creativity. Endless possibilities await. For more fish tank accessories, check out the other Fluval Sea products including aquarium filters, filter media, aquarium heaters, aquarium air pumps, aquarium lights, aquarium thermometer, fish food, aquarium gravel, fish tank decorations and aquarium stands. Fluval has a wide variety of products that are perfect for your pet fish to enjoy in any large fish tank, small fish tank, freshwater tank or in a saltwater tank. This Fluval aquarium is perfect to pair with the Fluval Submersible Heater or the Fluval Sea Protein Skimmer to help maintain a stable temperature and remove waste so your fish aquarium stays clean (all sold separately). If you are looking for a small fish tank the Fluval Evo Aquarium model is also available as a 5 gallon fish tank, Fluval Sea Evo Aquarium Kit – 5 US Gal (19 L) – Black (sold separately).

Brand: Fluval


Material: Glass


Tank Volume: 5 Gallons


Special Feature: Lightweight


Product Dimensions: 22"L x 11.5"W x 15"H


Item Weight: 10 Kilograms


Shape: Rectangular


Specific Uses For Product: Active


Style: Modern


Color: Black


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 22 x 15 x 11.5 inches; 22.05 Pounds


Item model number ‏ : ‎ 10531A1


Date First Available ‏ : ‎ October 12, 2016


Manufacturer ‏ : ‎ Rolf C. Hagen (USA) Corp.


Best Sellers Rank: #62,582 in Pet Supplies (See Top 100 in Pet Supplies) #69 in Aquarium Starter Kits


#69 in Aquarium Starter Kits:


Customer Reviews: 4.2 4.2 out of 5 stars (1,042)


Brand Name: Fluval


Included Components: Saltwater Aquarium Kit


Model Number: 10531A1


UPC: 015561105316


Global Trade Identification Number: 16


Manufacturer: Rolf C. Hagen (USA) Corp.


Item Type Name: Saltwater Aquarium Kit


Unit Count: 1 Count


Material Type: Glass


Tank Volume: 5 Gallons


Item Dimensions L x W x H: 22"L x 11.5"W x 15"H


Item Weight: 10 Kilograms


Item Shape: Rectangular


Product Style: Modern


Color: Black


Target Species: Fish


Additional Features: Lightweight


Specific Uses For Product: Active


Vivarium Type: Aquarium


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Mar 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Great tank. Highly recommend.
Great tank. Easy setup. Great for starters or those who are looking for a smaller tank.
Reviewed in the United States on February 4, 2026 by Wayne gillaspie
    • Fluval EVO 13.5 did it!
Breathtaking nano reef from Fluval: the 3D peninsula, all included in one nano tank. Placed on the kitchen countertop, big enough desk or stand-alone stand, an aesthetic marine tank in your home. Hardcore Hobbyist experienced or not, and whatever your taste in the nano reef, this is a beautifully designed saltwater aquarium. And functional. Now the bad things targeting the newbies: The Fluval EVO 13.5 box comes with a recommendation, what type of fish and corals to have in this aquarium. Follow that, if you don't, and get excited for more fish, expensive ones, or want that awesome coral from the fish store this tank will end up crashing, losing the livestock, and sold for pennies at the garage sale. -This saltwater fish keeping hobby requires money and knowledge. No matter if is Fish Only or Reef -Whatever livestock you put inside your tank, treated like your beloved, dog, cat, snake, iguana, or tiger you keep as a pet. Fluval EVO 13.5 comes ready to set up right out of the box. You just need extra: Knowledge( cycling the tank, water quality, and temperature control), rocks (dead or alive), sand (not a must), marine salt, thermometer, heater, saltwater test kit, salinity test, extra wavemaker for improved water movement (not a must). Reverse Osmosis is a must!!!!. You need to prep saltwater for a new set up and future water changes and to refill evaporated saltwater with fresh R/O water. No way around. Get it cheaply in jars from a local store, buy a home system (in the long run, you have insurance, cheaper solution, you get to maintain control) whatever you do, freshwater from your house will not do it. The only biggest problem all nano tanks and bigger ones too ( the smaller the tank the fastest things go wrong) have is temperature control in the summertime. If your tank is going above 80 F you have to modify the outlook of your Fluval to be ready for summertime. Give up canopy, Cooling fans (water evaporation fast), different suspended lighting, your home ambient temperature no more than 78F for cooling fan to keep it under $80F. And all of this extra hardware, chosen carefully not to end up with an ugly Fluval EVO 13.5 tank on your home!!! The expensive route to keep the stock Fluval outlook is a Mini Chiller, not many on the market and the only one with some degree of effectiveness and aesthetics is this one from Amazon https://www.amazon.com/Chill-Solutions-11415-Thermoelectric-Aquarium/dp/B00JY6UJB6/ref=sr_1_1?dchild=1&keywords=Chill+Solutions&qid=1588560696&sr=8-1. On this chiller, the maker is out of stock, the dedicated marine sites out of stock., Amazon has it for $50 more than the market and without tubing and the right pump. Yes, you need to have the right pump and the tubing to fit inside the Fluval filtration chamber in order for this chiller to work. Sorry for the bad news. ... show more
Reviewed in the United States on May 4, 2020 by E. Stanei
    • Awesome starter nano tank
I looked around for a while at several different tanks before deciding on the Fluval EVO 13.5 gallon tank. The first one arrived shattered but Amazon as usual made the return very easy and luckily the second tank arrived in good condition. The first thing I have to say is I love the way this tank looks, Fluval choosing to use a built in pedestal on the bottom to raise the tank up some makes a big difference. If you look online you will see there are tons of modifications that people are making to this tank and I made a few myself. I upgraded the return pump to increase the flow from 135 gph to 185 gph and I added a Hydor Koralia 240 nano circulation pump. The only other modification I made was to add an intank media basket to replace the foam filter that comes with it but there are several folks who have used it with no issues. I started with live sand and base rock then used nutri seawater in lieu of mixing up my own since it was such a small amount. I cycled the tank for 4-5 weeks before I added a clownfish and several weeks and more inhabitants later everyone is doing fine. I basically do a one gallon a week water change and replace the filter floss then once a month I replace the phosgen and every two months replace the chemipure blue nano packets. Following this routine has made things pretty simple and I will start all my future tanks the same way. If you're looking for a saltwater tank and aren't sure if the hobby is for you this is a great way to test the water, no pun intended. Yes, nano tanks are more susceptible to bad water conditions killing your fish because of the small volume of water but if you follow a routine maintenance schedule you should be fine. ... show more
Reviewed in the United States on October 30, 2019 by S. Oliver
    • Hood kind of annoying but classy looking tank
The media could not be loaded. Lid is pretty low quality but when it’s on it’s good. Tank can look really good as a rimless. 3 chamber sump so built in room for filtration. Very modern looking tank though as it appears to “float” on its stand, hood not programmable for lights but I think most intermediate aquarists will opt for clamp on upgrade lighting but it’s still pretty sleek as it is, you can add an additional submersible blue light and put the hood on a timer for whites but the hood does blues too, lid perfect if you think u might have “jumpy” fish in it though. I had some mature sand and mature decorations all 5-6+ years old, and a bully clown I put in it to start the cycle but maybe give you an idea what it offers at an entry price point. Return pump is weak but I put a small pump in each chamber that feeds into the next one- so on and so forth, and a wave maker thing. Added mature rock and some live rock and youll want a digital heater if you want to go reef. ... show more
Reviewed in the United States on February 4, 2026 by Joseph

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