My 120 gallon is infested with snails, it started with only two, I thought 'oh, those are harmless'. Seems I was wrong, a few months later I have hundreds, thousands even. I read that when snails breed constantly it's due to overfeeding however I had this problem before I even cycled the aquarium and added fish. About a hundred or so died off during cycling, apparently it takes much more then 7ppm of ammonia to kill them.. I read about putting a piece of lettuce in the tank, so I tried it, then there were the egg sacks, so I removed those off the live plants and decor, seems I missed a few so I once a again put a piece of lettuce in the tank, then they laid more eggs. I continued to do this for about 2 weeks and then I finally gave up. I'm not putting any chemicals or salt in the aquarium either. So now I'm turning to loaches. I originally planned to get 5 clown loaches since I read they have a slow growth rate of one inch per year or so, and I thought I'd give them away once they got around 7". But since I give attached to things I thought that may not be the best idea. So I looked up some of the snail eating loaches, but they seem to be too aggressive for my peaceful tank. The most aggressive fish I have in there are my 3 angelfish, the rest are small peaceful schooling fish (cories, congo tetras, rainbowfish). Does anyone know of a peaceful snail eating loach that would be the appropriate size for my aquarium?