Hello! I converted a bio reactor into an algae reactor with some waterproof string LEDs and an external pump. Due to space limitations I would like to sit this in my sump’s skimmer area. I’ve been trying to think of a good way to black out the reactor so it doesn’t leak light into the rest of the sump. I thought about painting it but I have the LEDs on the outside so that wouldn’t work. I also thought about maybe some sort of vinyl wrap or something. If the base and top of the reactor weren’t so large I would probably just find a large piece of PVC to put around it. I suppose I could take a smaller piece and cut it in half and use a rubber band or something to hold it on. At any rate I want this to be able to sit in my sump with as little light leak as possible.