Has anyone ever been able to keep ramshorn snails or amano shrimmp successfuly with their discus? My discus are always killing and eating my shrimp- it has turned in to a daily treat. Only one really fat one survived. What about Ram's horn snails? Would there be a parasite problem or a reproducing problem if I just bought a few? I'm just curious about this stuff because I'm getting my plants through mail order and I want to get any of these things before the plants come. Also, in a planted discus tank, is it possible to have too many plants and would it compromise the health of my fish?