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Fluval

Hagen Flex Freshwater Kit - Black - 15 gal

  • Based on 3,605 reviews
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Availability: In Stock.
Fulfilled by Monster Pets
Arrives Sunday, Aug 10
Order within 22 hours and 39 minutes
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Color: Black


Size: 15 Gal.


Features

  • Stylish Fluval Aquarium: Contemporary design with curved front and honeycomb wrap that conceals water line and filter compartment sides
  • Customizable LED Aquarium Lights: Fully adjustable 7500K White + RGB LEDs for endless color blends and plant growth support; FLEXPad remote for special effects like lightning bolts and fading cloud cover
  • Powerful Fluval Fish Tank Filtration: 3-stage filtration with oversized mechanical, chemical, and biological media for superior water quality
  • Perfect Pet Supplies: Fish tank enclosure with multi-directional dual outputs for customized water flow; easy feed top cover opening
  • Innovation for Fish Keepers: Fluval innovates to foster a sustainable future where aquatic life and humankind can thrive in harmony

Description

If you're looking for a fish tank that combines style and functionality, the Fluval Flex 9 Aquarium Kit is the perfect choice. This Fluval aquarium is designed to enhance the colors of your pet fish with its fully adjustable 7500K LED lamp that supports plant growth and provides endless color blends. The LED aquarium light is fully customizable with White + RGB LEDs and is controlled via a FLEXPad remote that also offers fun special effects like fading cloud cover and lightning bolts.But the Fluval Flex 9 Aquarium Kit is more than just a beautiful fish tank—it also boasts a powerful 3-stage filtration that includes an oversized mechanical (foam), chemical (carbon), and biological (Biomax) media to provide superior water quality for your pet fish. The multi-directional dual outputs of this Fluval tank allow for customized water flow, and the hidden rear filter compartment and easy feed top cover opening make maintenance a breeze. With its stylish honeycomb wrap that conceals the water line and the sides of the rear compartment, the Fluval Flex 9 Aquarium Kit is a modern aquarium that will look great in any home. Suitable for freshwater use, this Fluval fish tank is the perfect pet supply for those who want to care for their pets in the best way possible. Fluval is on a mission to bring inspiration and innovation to fish keepers around the world. Through ground-breaking product technologies, educational initiatives, conservation efforts, and strong social media engagement, our brand speaks to all generations of hobbyists to foster a sustainable future where aquatic life and humankind can thrive in harmony.

Brand: Fluval


Material: Glass


Tank Volume: 15 Gallons


Special Feature: Lightweight


Product Dimensions: 16"L x 15"W x 15"H


Item Weight: 12.72 Kilograms


Shape: Rectangular


Specific Uses For Product: Indoor


Style: Contemporary


Color: Black


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 16.14 x 15.35 x 15.35 inches; 28.04 Pounds


Manufacturer recommended age ‏ : ‎ 1 month and up


Item model number ‏ : ‎ 15006


Date First Available ‏ : ‎ December 12, 2016


Manufacturer ‏ : ‎ Rolf C. Hagen (USA) Corp.


Best Sellers Rank: #25,141 in Pet Supplies (See Top 100 in Pet Supplies) #74 in Aquarium Lights


#74 in Aquarium Lights:


Customer Reviews: 4.4 4.4 out of 5 stars 3,605 ratings


Item Weight: 28 pounds


Manufacturer: Rolf C. Hagen (USA) Corp.


Item model number: 15006


Date First Available: December 12, 2016


Item Package Dimensions L x W x H: 20.39 x 20 x 19.69 inches


Item Dimensions LxWxH: 16.14 x 15.35 x 15.35 inches


Item Weight: 12.72 Kilograms


Brand Name: Fluval


Target Audience Keyword: pets


Directions: Use as directed on packaging


Warranty Description: Manufacturer Warranty


Model Name: Hagen Flex Freshwater Kit - Black - 15 gal


Color: Black


Size: 15 Gal.


Material: Glass


Age Range Description: All Life Stages


Number of Items: 1


Style: Contemporary


Included Components: Hagen Flex Freshwater Kit - Black - 15 gal


Specific Uses for Product: Indoor


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 10

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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Similar Products

Top Amazon Reviews

    • So far so good !
Color: Black Size: 15 Gal.
Review Image by Jody J. Jody J.
Awesome! Love the bowed front. It looks really good. It came with the pump and filter . The filter is hidden in back and came with the filter media and charcoal as well. I did have to by a thermometer and feeding door seperate. Other than that it's perfect. The lights are amazing too!
Reviewed in the United States on July 18, 2025 by Jody J. Jody J.
    • Nice quality tank!
Color: Black Size: 15 Gal.
Review Image by Toby Wright Toby Wright
Review Image by Toby Wright Toby Wright
I really like this tank! I was looking for a nice small tank for a planted aquarium. The bow on the front really makes the tank unique and adds a sharp expensive look to the tank. The quality of the glass is nice and the black beading on the back wall and the top rim of the tank really helps clean things up. It nicely hides all the equipment and pumps in the bank and give a nice look to the waterline. The light fixture came DOA, but the seller quickly replaced it and it is now working great. The light is bright and provides a lot of custom options. It may not be the strongest light for a planted tank, but sure looks like it will be more than enough for the plants I am growing. The real compartments are large enough for your own mix of equipment and filter media. The grates on the intakes are a nice touch and will keep small fry or shrimp out of the rear compartments. I added some small filter material inside these grates to further decrease the chance of fry or shrimp entering. The pump is quite strong and is completely silent. I cannot hear it run at all. The tank sits next to my bed and you wouldn't think it was even running. The tank also came with a nice mat for the bottom glass. Overall I am extremely happy with the tank. Ignore the bad or misleading reviews. Perfect planted tank. Great quality and a great price point. Thanks! ... show more
Reviewed in the United States on August 4, 2018 by Toby Wright Toby Wright
    • Good price and good product
Color: Black Size: 15 Gal.
Perfect really like
Reviewed in the United States on July 3, 2025 by Evaristo Saldivar
    • I'd buy it again.
Color: Black Size: 15 Gal.
I have two of these. I liked the 1st one so much, that I added another within the month. I have currently have four Tanks in my Living Room. The built in filters on these are okay, (but) you need to make sure to pull the pumps each time you clean them and remove the pump filter and clean it as well. (Easy to do.) If you do not do this, the water flow will go down considerably reducing thecoverall Filters systems effectiveness. I really like the design of the tank. The included hood and lighting system are nice and you get tons of different lighting options. It is quite easy to add supplemental filters to this set up. I would buy this Fish Tank System again. ... show more
Reviewed in the United States on May 2, 2025 by Ken K.
    • Gorgeous tank, faulty lighting
Color: Black Size: 9 Gal.
Ive had my tank almost a year now and its been great! The internal built in filter is low maintenance (rinse the medium now and then). It keeps my tank nice and clean looking and is very quiet. Ive never had any water parameter difficulties. I use black sand as a substrate and the filter has never picked up particles. Its very well made and looks/feels luxurious. I do need to take a star off because the built in lights started malfunctioning after about 6 months. It constantly flashes dark blue lights at random when lights are switched off. Ive tried every setting and unplugging, but nothing stops the lights except turning the lights on intentionally. It doesnt impact functionality at all and I have gotten use to it, but I do worry about the longevity of the LEDs with blue lights always flashing for no reason. ... show more
Reviewed in the United States on February 17, 2025 by Ashley B.
    • Fantastic!! I Love This Aquarium!
Color: Black Size: 15 Gal.
Review Image by Laura R Laura R
For many years, I kept saltwater, brackish, and freshwater aquariums on a pretty large scale. I took a break from the hobby, and recently found myself ready to get back in the saddle, though on a smaller scale. I chose this aquarium for the Fluval name-- I had great prior experiences with Fluval filtration (loved my Fx4!!) This aquarium reignited my love for Fluval. Super quick and easy set-up, attractive, so quiet that you can't hear it running, and the lighting is really sophisticated-- fun to personalize the light settings!! I was pleasantly surprised by the technological advances (and reduced costs) offered by this aquarium, since I was last active in the hobby. Overall, I give this 5+ stars. I plan on buying this set-up again for my parents (and setting up another one for myself!). I do, though, have some suggestions to Fluval, as an experienced aquarist, as to improving this already great aquarium-- 1. The food slot in the front of the tank lid would benefit from having a sliding or hinged door. My cats sit on top of the tank and were easily able to get their paws in, until I installed a mesh cover. 2. It would be nice to have the top hinged, so it would be supported whenever doing water changes. 3. Even though this is a relatively small aquarium, I can see that there might be times that you might want to use additional equipment with it, such as a chiller, sump, or UV sterilizer. However, the current lid design, head space, and design of the partitions between the back chambers doesn't support this. It would be great if those areas could be re-designed to provide flexibility to use additional equipment, as needed. Overall, though, I adore this aquarium!! Already planning my next Fluval Fex 15 gallon tank. Stay tuned! ... show more
Reviewed in the United States on April 15, 2023 by Laura R Laura R

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