Not sure if anyone addressed this but those rubbermaid roughneck containers( and all others out there Im pretty sure) aint light proof. Your going to need to address this or you will get algae. you can paint em black and then white over it, but to my expereince the paint can just chip off when your dealing with plastic. I would put my tub over a light and spray it with black paint(for plastic) till I couldnt see the light, then for the lid use black white poly or mylar of something! Good luck