Just a question before I start making my new sump. Is silicone sealant the same as aquarium sealant? The silicone sealant I bought is for use with lexan, plastic and poly carbonate. It says it can be an irritant prior to curing if in contact w/skin, eyes, etc. It contains some pretty funky stuff that I won't try to spell. I just don't want to use anything that will end up screwing up the system (or its inhabitants) in the future...