Hello, I'm considering lining a baffle (in the sump) to block light from the refugium. I found a 24 by 36 inch sheet of black plastic cardboard. It was with the acrylic they sell & cost 10 bucks. They had white also. So I "think" it would be safe to submerge it but not sure. The white still let light thru where as this black stuff ,nun at all.
Any ideas how to fasten it with out draining the sump? I was thinking some superglue gel perhaps.Thanks
Any ideas how to fasten it with out draining the sump? I was thinking some superglue gel perhaps.Thanks