Black chamber cover lids fitted over the back filter chambers of a Fluval Flex 9 gallon, water flowing below

Filter Chamber Cover Lids for Fluval Flex 9 Gallon, Set of 3

Black
$18.00
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Black chamber cover lids fitted over the back filter chambers of a Fluval Flex 9 gallon, water flowing below
  • Black chamber cover lids fitted over the back filter chambers of a Fluval Flex 9 gallon, water flowing below
  • Graphic: set of 3 black chamber cover lids for the original Fluval Flex 9 gallon, with deep cord cutouts
  • Graphic: black chamber lids on an original Fluval Flex 9 gallon cover the filter chambers of an open-top tank
  • Underside of the 3 black original Fluval Flex 9 gallon chamber lids, showing their locating tabs
  • Set of 3 white chamber cover lids for the original Fluval Flex 9 gallon, top view with cord cutouts
  • Underside of the 3 white original Fluval Flex 9 gallon chamber lids, showing their locating tabs
  • Three white chamber lids installed in a row over the rear chambers of an original Fluval Flex 9 gallon
Filter Chamber Cover Lids for Fluval Flex 9 Gallon, Set of 3

Filter Chamber Cover Lids for Fluval Flex 9 Gallon, Set of 3

Reviews from our Etsy shop

$18.00

Fits: Fluval Flex 9 Gallon (Original)

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

Not sure which tank you have?
  • Three separate lids, one for each rear chamber.
  • Cuts water loss from the filter chambers in an open-top tank.
  • Deep cutouts for heater cords, airline and hoses.
Color
  • 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

Running a Flex 9 without the stock lid looks great, but it leaves the filter chambers open to dust and evaporation. These three chamber covers close the rear chambers in an open-top setup and still leave room for every wire and line you run.

Compatibility
  • Fits: the original Fluval Flex 9 gallon (34 L).
  • Does not fit: the Fluval Flex 2.0 or the Flex 15. For the Flex 15, see our Flex 15 chamber lids.
Why it helps
  • Three separate lids, one for each rear chamber.
  • Cuts water loss from the filter chambers in an open-top tank.
  • Deep cutouts for heater cords, airline and hoses.
  • Lift one lid off to reach the pump or media, then set it back.
Installation
  1. Use the angled edges as your guide: the middle lid has two straight and two angled edges; the outer lids have one straight and three angled edges.
  2. Set each lid on its chamber with the wire cutouts toward the back of the tank.
In the box

A set of 3 chamber cover lids, in black or white.

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: 11 (79%)
  • 4 stars: 1 (7%)
  • 3 stars: 0 (0%)
  • 2 stars: 1 (7%)
  • 1 star: 1 (7%)
S
Steve Davidson

Fits perfect, I should have gotten 2 but didn't get the 2nd tank till after I ordered.

Steve Davidson review photo
S
S AK

Perfect! I couldn't use one of the pieces because of my light, but I don't mind. Love the look of my tank.

S AK review photo
H
Holly Gardner

Fast shipping! Super durable chamber covers, perfect fit. Ample openings for cords. Highly recommend!!

M
Mike Johnson

great quality and well packaged

D
Dennis Zimmerman

Well made and fit perfectly. Nice to have.

D
Daniel Bosman

Did not receive after a month of waiting guess I go without

J
Jose

Good / Perfect as described

E
Etsy customer

This changes the entire feel of the aquarium setup in combination with the corresponding light holder.

S
Steve Davidson

Works great. This is second buy, I have 2 tanks.

s
santiago reyes

Great quality and arrived early

A
Alex

Used for the fluval flex 9 gal and they're a perfect fit. Have used other covers in the past, but love how these lock themselves in and stay put. Gives the tank such a clean look.

j
james

Item was not fitting my middle section. No biggie I will trim it. Possibly aquarium variation, who knows.

W
Wayne Lahene

Great product thanks again 👍

E
Etsy customer

Perfect fit with no sharp edges! Thank you!

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