Top view of the black chamber one media basket for the Flex 15, filled with white bio rings, black bio balls, a white mesh media bag and black foam, with two covers set aside.

5-Stage Media Basket for Fluval Flex 15 Gallon, Chamber 1 (Intake)

$90.00
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Top view of the black chamber one media basket for the Flex 15, filled with white bio rings, black bio balls, a white mesh media bag and black foam, with two covers set aside.

5-Stage Media Basket for Fluval Flex 15 Gallon, Chamber 1 (Intake)

Reviews from our Etsy shop

$90.00

Fits: Fluval Flex 15 Gallon (Original)

Not for: Fluval Flex 9 & 15 Gallon 2.0 · Fluval Flex 9 Gallon (Original)

Not sure which tank you have?
  • Up to 5 stages of media in chamber 1.
  • The water goes through every layer; it does not take a shortcut around your media.
  • Three covers cradle the media and make loading easier.
  • Flat $4.88 shipping for your whole US order
  • Ships Mon, Wed & Fri. Arrives 2–5 business days after it ships.
  • Damaged or wrong? Refund or a new part within 30 days. Our policy

About this part

Keeping filter media in order in the Flex 15 intake chamber is a puzzle. This 5-stage media basket gives chamber 1 its own compartments, and it makes all of the water pass through each layer of media before it goes back to the pump.

Compatibility
  • Fits: the original Fluval Flex 15 gallon (57 L), chamber 1 (the intake chamber).
  • Does not fit: the Fluval Flex 2.0 or the Flex 9.
Why it helps
  • Up to 5 stages of media in chamber 1.
  • The water goes through every layer; it does not take a shortcut around your media.
  • Three covers cradle the media and make loading easier.
  • Pairs with our 3-stage center chamber basket for a full Flex 15 setup.
Installation
  1. Load your media into the compartments.
  2. Set the three covers in place.
  3. Drop the basket into chamber 1.
In the box

One 5-stage media basket with three covers, in black. Filter media is not included.

Designed and 3D printed in Pennsylvania. One flat shipping price covers your whole US order, so a second part ships for no extra cost.

  • 5 stars: 52 (96%)
  • 4 stars: 2 (4%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Y
Yoan

Superbe réalisation qui permet d’avoir une vraie filtration, cela m’a permis d’optimiser mon bac. Le vendeur est top et communique très bien. C’est pour moi un des meilleurs sur Etsy

J
Jacob Saxton

Great product fits perfectly and works as designed

M
Michael Isabell

I haven’t had my Fluval Flex 15 too long but I was having issues with my water looking too cloudy and after rinsing my filter sponge numerous times, I happened to see this additional filtering system for this Flex model. I ordered it and am thrilled with how clear my aquariums water has been since installing it into the 3rd chamber. It is a very tight fit but well worth the effort and cost when my aquarium looks this clear!

P
Patrick Domingues

Seller is great! This item for the fluval 15 is a solid addition. Well worth the money.

D
Darryl Munden

Well made and contains compartments that for everything you need.

J
Jamie

Item as described. Fast shipping. Snug fit. Definitely improved filtration from stock fluval set up. Pleased with purchase

K
K

Very nice products and fit into my flex no problem. Thanks!

A
Adam Cutler

Fantastic product and really well made, can't wait to get it installed.

M
Michael Moore

As always with your products everything arrived safe and sound and beautifully crafted! The additions that you supply have turned my 2 15 gallon Flex tanks into wonderful many ecosystems!

M
Michael Moore

Everything I have ordered from this company has always been fantastic. Thanks again for the prompt and careful shipment. Everything arrived safe and sound.

L
Leo

Great communication with seller, good pricing, fast delivery

B
Benjamin Bourgeois

High quality. Helps a lot with reef tank.

S
Sign in with Apple user

Fits the Fluval Flex 15 perfectly!

R
Randolph

Quick and excellent product. Responds very quickly

H
Henry Lee

Everything was as expected and the unit fits PERFECTLY. And I mean PERFECTLY.

I’m going to echo what other reviews have said which is: you’ll need to remove the filter covers/guards that come default on your Fluval 15 Flex (don’t worry, you can put them right back on once you’ll put this unit in).

Excited to see how it serves long term but so far I’m already noticing a change in water quality!

E
Etsy customer

Took my Fluval Flex 15 to a whole new filtering level.

G
GRAHAM MACKAY

Most excellent addition to the flex tanks

E
Etsy customer

Not fitted atm as waiting on new Betta before I mess filter around

H
Hunter Young

This filter box is perfect. It fits absolutely perfectly into the first chamber of my Fluval flex 15 tank. Like ABSOLUTELY perfectly. I was almost concerned it wouldn’t fit. You will probably have to unclip your intake vent covers and pop them back on in order to get this whole thing seated correctly. I love that I can easily slide this whole unit out to replace and/or clean/recharge filter media plus having the 5 possible compartments that I know my water is going to flow through allows me to be very precise about how the water gets filtered. I’m leaving my main filter in for at least 6 months with this prefilter to ensure a healthy bacterial colony grows on this new media, but then I might remove the main filter and use the center compartment to store the sponge filter for my quarantine tank when it’s not in use.

C
Christina Spence

Loved this product . It helped me keep all my filter products in one area with great flow. I used filter floss, Seachem Matrix and Seachem flourish . It fit perfectly in my filter area and was made really well . This guy is genius . It’s worth the price to get this product !

L
Luis Lopez

Fits like a glove! I woke up the next morning to crystal clear water! If you're on the fence... It's definitely worth the price!

F
Fernando Oliveira

Great quality and fit perfectly

E
Eddie Peterson

The item was nice as expected.

S
Shawna Richards

This modification fit like a glove in my flex 15. The flow after installation is great and I didn’t need to adjust anything. Was basically a “plug and play” mod. Very pleased with this purchase. Thank you ☺️

M
Margaret Marcella Couture

Perfect fit! Great seller. Thank you!

S
Steve Behan

Fit was perfect, quality 3D printing, exactly what I was hoping for!

J
Jill

Perfect for my Flex 15. I just installed it yesterday and I already can see the difference in the tank water. Easy to install, and plenty of room for media

U
Uyen

Expensive but the product is great quality.

J
Jason

Absolutely perfect. They fit like a glove and hold a bunch of filter floss or media.

W
William Mitchell

Blown away by the quality. The pictures do not do justice. I thought this would be smaller for some reason, but was pleasantly surprised by how much filter media I was able to fit. Quality product! great packaging! highly recommend buying from this seller. Don't settle for some of the cheaper options. I actually bought things from a few sellers, and this was by far the best quality products.