Safe paint for sump

[DmitryB]

Soooo the IM sump, and the chamber dedicated for a refugium, has a clear acrylic lid. Who wants their purple light spilling all over the place??? Not me! So what paint is safe to use to paint the lid? I also wish the baffles were not see-through around this chamber, but I guess nothing to be done about that. At the very least I'd like to paint the lid(s). Is Krylon still the paint to go with? The Fusion line?

 

[Matt L]

Should be able to get black acrylic and cut to fit or have someone 3d print a lid.

 

[BryanM]

^^ The above is definitely a good plan.

Krylon Fusion for plastic works, it needs to cure fully before getting anywhere near your sump. 7 days.

 

[UncommonSense]

Here’s an alternative option, a light shade:

Thread 'Barndoor for Kessil H80'

Nov 14, 2025

Can anyone recommend a barndoor for a Kessil H80 refugium light? This would be to go over an in-sump refugium, to limit light spilling over to the skimmer compartment. I looked online but there are so many different barndoors I didn't know how to pick the right one for this light. Thanks!

• RobertK
• Replies: 6
• Forum: Aquarium Lighting