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Fluval FLEX 57L Aquarium Kit, 15 gallon - Black

Product code: 6298

Availability: In stock

Ships Monday, June 1 if ordered in the next 1 day, 5 hours and 21 minutes!

Regular Price: $159.99

Special Price: $149.95

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Fluval FLEX 57L Aquarium Kit, 15 gallon - BlackFluval FLEX 57L Aquarium Kit, 15 gallon - Black
Fluval FLEX 57L Aquarium Kit, 15 gallon - Black Fluval FLEX 57L Aquarium Kit, 15 gallon - Black Fluval FLEX 57L Aquarium Kit, 15 gallon - Black Fluval FLEX 57L Aquarium Kit, 15 gallon - Black Fluval FLEX 57L Aquarium Kit, 15 gallon - Black Fluval FLEX 57L Aquarium Kit, 15 gallon - Black Fluval FLEX 57L Aquarium Kit, 15 gallon - Black

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Fluval FLEX 57L Aquarium Kit, 15 gallon - Black    

The Fluval Flex not only offers contemporary styling with its distinctive curved front, but is also equipped with powerful multi-stage filtration and brilliant LED lighting that allows the user to customize several settings via remote control.

Dimensions: 16" W x 15" D x 15" H


  • Included: Aquarium, Light, Pump, Filtration Media. 
  • Heater sold separately


Key Features :

  • 7500K LED lamp supports plant growth and enhances fish colors
  • Fully adjustable White + RGB LEDs for endless color blends 
  • FLEXPad remote can also control fun special effects (i.e. fading cloud cover, lightning bolts)
  • Powerful 3-stage filtration for superior water quality
  • Oversized mechanical (foam), chemical (carbon) and biological (Biomax) media included
  • Multi-directional dual outputs for customized water flow
  • Hidden rear filter compartment 
  • Stylish honeycomb wrap conceals water line and sides of rear compartment
  • Easy feed top cover opening
  • Bold curved front design
  • For freshwater use only


Questions on Fluval FLEX 57L Aquarium Kit, 15 gallon - Black

  • From Kathryn at 4/16/2018 6:50 PM
    • Is this glass or acrylic?
    • Kathryn,
      This is a glass tank.
    • Do you find this question helpful?  Yes   No
  • From Al stone at 9/15/2018 12:42 PM
    • What's the shipping weight of the FluVal Flex 57L Aquarium kit.
    • Al,
      Shipping weight of this aquarium kit is approx. 30 lbs.
    • Do you find this question helpful?  Yes   No

Ask Your Own Question

  1. Perfect Review by Dorin
    Product Rating:

    Awesome tank. Service and shipping were phenomenal! Easy set up. Could not be happier with my purchase! (Posted on 4/30/2020)

  2. Fluval Flex 15 gallon Review by Dalton
    Product Rating:

    I am extremely happy with this aquarium. It came very fast to within 75 miles of my home and they held it up for a week because of covid priorities. But it was there on the day aquacave said it would be. So they upheld their part. I am very happy with Aquacave and their service and products (Posted on 4/22/2020)

  3. Fluval 15 flex Review by Brian
    Product Rating:

    Awesome set up, first time buying from aquacave and everything is perfect I’ll definitely keep purchasing from you guys. I already got my tank running (Posted on 6/3/2019)

  4. Great buy Review by Luc
    Product Rating:

    Aquacave shipped the product promptly and the packaging was top notch. The aquarium is truly ingenious with the ability to have filets, heaters...out of sight. Now to achieve that you need to take the actual swimming area down to a 10 gallon Aquarium. I knew that when I bought it as I had done my research.
    Nice light system with a day mode and night mode. Only thing that could make it better is that the lights would switch from day to night on their own (Posted on 6/1/2019)

  5. Nice simple good looking tank Review by Great purchase
    Product Rating:

    Great starter tank for beginner. Bought this tank for my Betta, & few community fishes going into. The LED light at mole easy to use. Only mod I did was put a filter screen into the nozzle to slow down the flow for Betta. It’ll be five star if they come with flow adjust for pump but for the money it’s a good buy.
    (Posted on 7/2/2018)

  6. Good buy! Review by AM
    Product Rating:

    Sloppy silicone job on one side.
    Rest everything is awesome. (Posted on 5/16/2018)

  7. Pristine Nano Aquarium Setup Review by Ruby's Fishtank
    Product Rating:

    This Fluval Flex 15 gallon is exactly what we wanted for setting up our first planted/fish aquarium.
    The all-in-one system is convenient from the filtration to the lighting.
    We are enjoying our NEW Pristine Nano Aquarium every day. (Posted on 5/15/2018)

  8. Great aquarium after mods. Review by Julia E
    Product Rating:

    Shipped and arrived quickly. Tank was easy to setup. Holes for intake were too big for my nano fish. I tried putting a fluval sponge in between cover and grate but that stopped up the water too much. Ended up cutting plastic sewing canvas to size and sliding guard attachment through it. Worked great! Carbon and bio bag are small to the size of the aquarium. Added a couple more to the filter. There is plenty of room for it. The filter current was too strong. Added fluval edge sponge to each outtake. Now it’s perfect. Heater fits nicely in filter. Cover is awkward to get flat with cords in back. Had one fish jump and one shrimp jump/climb the filter wall into the filter. He’s fine but shrimp died on sponge. Overall, would buy again. (Posted on 4/16/2018)

  9. Love this product. Review by Jennifer
    Product Rating:

    Arrived in perfect condition. Love the shape of this aquarium. Easy to aquascape. Happy with the design of the filter system. (Posted on 3/23/2018)

  10. Fluval flex 15gal Review by zoeykitten2008
    Product Rating:

    Fish tank came packaged very well. Everything has been working well. The only thing I need to fix is the hose to the filter is alittle to short and won’t reach the bottom of the tank so it makes a humming noise because of it. Very pleased with the tank and glad I bought it. They did price match too. (Posted on 2/1/2018)

  11. Great design Review by shawn
    Product Rating:

    Love the tank i set it up as a nano reef tank. Only complaint it one side had a very sloppy silicone job. Fixable, but not what you want from a 15 gallon tank that costs over $100 that said id still buy another one if i need to. (Posted on 1/18/2018)

  12. Great purchase Review by Rod
    Product Rating:

    Great tank and filter system. Easy to setup and operate. Arrived in perfect condition. Plan on purchasing another soon. (Posted on 1/16/2018)

  13. Nice Aquarium Review by Victor
    Product Rating:

    Great purchase. Arrived in perfect condition. Easy setup. Still going through cycling and so far no problems. (Posted on 12/8/2017)

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149.95 In stock