A question for those that have worked with PVC pipes with your aquariums. Is it ok to use the PVC pipe sealant/glue or should I just use silicone? I made a spray bar last night for the reef and after many battles with leaks around the ball valve using silicone, I ended up cuting it off and going without it. But I want to add it back on and I know the normal sealant works great but is it safe to use with on the aquarium plumbing? Thanks for the help in advance!