Blocking Light in Sump?

[tang daddy]

Originally Posted by GMGQ

Go to the craft store and get a sheet of corrugated plastic. Cheap, light weight, and easy to cut.

As Gmgq said a craft store like michaels has mesh knitting mats for .89 a sheet, and you would need some suction cups to hold the mesh down as it will try to float, You can find those cheap at Canadian tire.