I just got back into fish keeping after about 10 years. im 31 now and can afford a 120 that I always wanted back in my 55 gal. days. so I get one set it up plant it stock it and its all good. first problem. my feeders bring me snails. a friend brings over a bottle of a product ( had a snail) I use it as recommended a few times. now its been years since i was into fish keeping and i didnt do my homework. the snails came back big time! but all my plants that used to be huge died off down to the shutes and now will only grow a few inches tall and none of my fish ever seem real happy other than the LMB who i think can live in sewer water anyway. I know the product was a copper base. and copper can cause problems but its been a few monthes since i used it. now i introduced a new fish (perch) and within a few days hes looking rough. what the heck is going on????