I'm putting together a pretty big rock formation for my Africans using plastic Lok-Blocks, and I'm trying to find a type of glue or adhesive that will A- Not kill my fish and B- Hold the blocks together under water for a long time. I was originally going to go with a natural rock formation, but I couldn't find anything I liked, and the Loc-Blocks were cheap and kinda fun to work with. Like Legos for grown ups!
. Thanks in advance for your help. You guys rock!
