Ok for anyone that knows my tank. It's cycling or coming to the end of cycling. My parameters as of today are. PH 8.2 Amm 0ppm Nitrite 0.25ppm Nitrate 10ppm SG 1.024 Copper 0 I've been trying to get a couple snails in there to clean the diatoms. I acclimate the snails for over 8 hours but as soon as they get dropped in the tank they look really lazy and then crawl a short distance and die. WTF is happening?