So i found out this morning using a flashlight this crab that was on my acro....i saw it eating the tips......and i believe this is the cause of why only 1 or2 of my acros were starting to RTN or have symptoms of an alk burn.........So i had to make a decision........leave him and try to close any gaps in the rocks so that he couldnt come out........or remove all my rocks and reaquascape while removing the crab........and so i did that...........the guy is 5-6" inches in length and about 3-4" wide..........he was a huge sucker


