yeah i though it was kindof kooky (one of those YEah RIght things)but i haven't had any problem, unless i didn't follow it. I guess it has something to do with the allowable tolerences of the threads when manufacturing, larger the pipe the larger the tolerance i guess the tape will pushback and bind if you use to much. so i'm told it sort of makes sense when you think about it.

makes sense.

mantis
 

Lucky you. The mantis in my tank used to come to feed in a crack in the rock that I had full view of and I know for sure it's a mantis. Has the weird detached slit eyes on its head. I don't notice any tapping though. I haven't seen it for a while and until my shrimp went missing it was out of sight, out of mind ...