I brought home a BN pleco today from my store, and acclamated him for a while, when i released him into the tank he just sank right to the bottom. Hes breathing, and once in a while will flinch a litle and kick up some substrate. I gave him a little tap and he moved to the front corner where my guppies and tetras started picking at his bristles and eyes!! I fed the guppies and theyve laid off of him. All my readings are fine but the ph is a little high, i know plecos like lower ph, but at thge fish store im guessing they probbaly have a fialy high ph too, is it just the stress of being moved?