Had my tank running for few weeks to cycle through and just recently bought two clowns and two snails...but both clowns were dead if just 5 days...they were active at first, but there had been a temp drop from 82 to 74 in a day...I don't know if that cause their misery...but both turbo snails are still doing okay...all my water parameters are good w/ readings at or near zero...HELP...I don't know if there's anything toxic in the water, but the snails would've gone first?? I'm clueless and I don't want to run out to get more fishes now...:frustrat::frustrat::frustrat: