loctite

I have been using the GE1 silicone to construct DIY for sump, etc but now see the above Loctite Plumber and Marine Clear Adhesive. What I cannot find even in the MDS for the product is if this is safe for life... Obviously it works somewhat if used around faucets and underwater applications...

So I've been yelling at my tank a lot...or rather whoever keeps moving my frags around! Every day when we're on our way home, my husband and I play a little game of "guess how many corals got flipped onto the sand". It's driving me a little bit batty. I got some loctite gel superglue and the...