Co-Op light size

[aportis72]

I’m trying to see what Co-Op light would be best for my tank. I have a rimless tank that is 23.6 inches and was wondering if the 24 inch Co-Op light will work or should I be using the 20 inch. 
 

Thank you

[Galabar]

I measured my 30" Aquarium Co-Op light and it is a total length of 29 15/16" when fully closed. This includes a little lip on the end, which is 1/16 on either side.  The part that sits on the tank rim is 10/16" wide.

So, the edge would sit on a rimless tank (when fully closed) from 29 13/16" to 28 9/16" (if all my measurements and math are correct).

Ideally, the 30" Aquarium Co-Op light would fit "best" on a rimless tank that is 29 13/16", but would still sit on the rim of a rimless tank down to 28 9/16".

I'm guessing that the Aquarium Co-Op 24" and 30" lights have the same brackets.  The Aquarium Co-Op website says the 24" light is 23.6" long (I'm assuming full closed): https://www.aquariumcoop.com/collections/lights/products/aquarium-co-op-easy-plant-led.  So, that would be just about perfect for your tank (you may even end up extending it by 2/16" to get it to fit flush on the tank).

Edited August 18 by Galabar

[Galabar]

Also note that you are going from 22 to 26 watts when moving from the 20" to 24" Aquarium Co Op light, along with better coverage for the tank.

Edited August 18 by Galabar

[Matt B]

20 inch CO-OP light on a 3.7 gal cube.....

Perfect fit!!