Black prefilter intake cover with a wave-line pattern installed in an aquarium intake, under a black chamber lid.

Prefilter Covers for Fluval Flex 9 & 15, Spec V 5 Gallon & Evo 13.5

Fluval Flex 9 & 15 (Pair)
$15.00
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Black prefilter intake cover with a wave-line pattern installed in an aquarium intake, under a black chamber lid.

Prefilter Covers for Fluval Flex 9 & 15, Spec V 5 Gallon & Evo 13.5

Reviews from our Etsy shop

$15.00

Fits: Fluval Flex 9 & 15 (Pair)

Not for: Fluval Flex 9 & 15 Gallon 2.0 · Fluval Betta 2.6 Gallon

Not sure which tank you have?
  • Closes the overflow slots so shrimp and fry stay in the tank.
  • The 30 PPI sponge catches bits before they reach the filter chambers.
  • A sponge surface where shrimp like to graze.
Tank
  • 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

Shrimp and fry are small enough to slip through the overflow slots and end up in the filter chambers. These prefilter covers close off the slots and hold a 30 PPI sponge. Your little fish buddies stay in the tank, bits of food and plant stay out of the filter, and your shrimp get a sponge surface to graze on.

Compatibility
  • Fits: the original Fluval Flex 9 and 15 gallon (sold as a pair), the Fluval Spec V 5 gallon and Spec III 2.6, and the Fluval Evo 13.5. Pick your tank in the choices.
  • Does not fit: the Fluval Flex 2.0. We make a separate prefilter set for the 2.0.
Why it helps
  • Closes the overflow slots so shrimp and fry stay in the tank.
  • The 30 PPI sponge catches bits before they reach the filter chambers.
  • A sponge surface where shrimp like to graze.
  • Replacement sponges (6 pieces) are a choice on this page. They fit all three covers; cut one in half for the small lower Flex piece.
Installation
  1. Find the two large tabs and the small nub tabs on the back of the cover.
  2. Point the nub tabs down into the overflow slots.
  3. Press until the large tabs click in. No tools needed.
In the box

The Flex choice is a pair of covers (upper and lower). The Spec and Evo choices are one cover. Each cover comes with its sponge. Black.

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: 171 (97%)
  • 4 stars: 4 (2%)
  • 3 stars: 1 (1%)
  • 2 stars: 1 (1%)
  • 1 star: 0 (0%)
K
K

Very fast response when asked to have a white one created. Fits perfectly! Excited for my tank setup!

T
Terrance West

Fit perfectly definitely will be ordering from here again

a
andrew

Exactly as described, does a great job as a prefilter!

M
Martha C

These would be perfect if I had the fluval flex 15 model that these are made for. Unfortunately the model I have has one large full height intake grate. I should have paid closer attention. Thank you :)

D
Derek

Fits perfectly over the filter intake on my Fluval Spec V. It will keep my shrimps safe from getting caught in the stock openings!

J
Justin Garrett

Just what I needed so my pistol shrimp would stop going into the filter chamber of my fluval 13.5

S
Steve Rey

Fast shipping, great product I would definitely recommend it!

It fits a bit loose and does slide down a little once the water starts to evaporate, but that's just a reminder to top off the tank with water! Then once water level is up again the suction/pressure against it, it holds up great!

E
Etsy customer

It fits easily and covers perfectly. My shrimp love their little tank!

C
Cynthia Captain

These covers fit perfectly! I especially appreciate the filter media! These will definitely keep my tiny baby fish out of the intake. Thank you!

K
Katie

Item fit perfect for my Fluval flex 15. I think this is much safer for my nano tank guys.

L
Lindsay

Looks great in my Fluval Spec V tank. Perfect fit, quick shipping, and responsive and helpful creator/seller. Thank you!

C
Clayton Lind

It works amazing for my tank and looks great, the only thing is that it doesn't allow the lip of the fluval tank lid to go down all the way which honestly doesn't bother me too much but I still love it. Thank you so much.

S
Solomon

Looks great and works great!! Keep my Endler fry and baby shrimp safe.

E
Etsy customer

These filter covers for my Fluval 9 gallon are absolutely perfect and just what I was looking for to keep my Bettas fins safe. Thank you! Genius 😎

F
Farouk El Chami

The item came with a sponge inside, which allows for extra filtration.

T
Tariq Lateef

Spoke to the seller, he directed me to which filter covers to purchase. I ordered two which fit great on the two filter ports of my fluval 16 gallon tank

S
SaLeana

I like how the material isn’t like a hard plastic, it’s pretty bendable but still sturdy. And it came with some filter-foam to stick it in which is also nice! My fish was given to me with some disabilities to his swimming so having something to weaken the force of the filter is nice- he’s not getting sucked in

C
Carroll Taylor

Great print works excellent on my fluval 9 gallon

J
Jay Smith

These vent covers worked perfectly! Snapped securely into place and has foam inside as well. Highly recommended

T
Tim Anthony

Intake is exactly as described, fits perfectly.

K
Kodi Phillips

The piece is well crafted and fit exactly as described

R
Rosangela Manfredo

Looks awesome! I love that it came with the filter sponge. Now Jaqcues [the Amano Shrimp] can stop ducking in and out of the tank and into the heater element space.

E
Etsy customer

Very nice hide. Love it!

A
Ashley

I wasn’t paying attention when I bought this. Thought it was for the fluval flex 9, it’s not. That’s on me!

B
Bobbie

Arrived well packaged and as described.

B
Brandon Chan

I thought because i had a 9.0 flex, i would use the small attachment, but the big one it came with (it came in pairs) worked like a charm. definitely noticed my betta not hiding in the corner can sucked in by the intake. amazing product.