I agree! My yo-yo's are hounds for snails. I was starting to get a really bad problem when I added them. The morning I put the yo-yo's in my 50 gallon I counted over 30 little snails in just a few minutes. 4 days later I couldn't FIND a snail in the tank. Plus yo-yo's are neat little fish, cool looking and lots of personality. My 3 are my favorite fish.Nuriel said:they should be fine left alone. if you choose getting a loach i suggest a smaller type- yoyo or skunk- clowns can grow 10+inches, so that wouldnt work out!!!
goodluck!