so my 9 gallon is getting some algae on the glass. I want to get a few algae eating snails but not nerites. I have them in my bigger tank and love them but I don't want all those scatter eggs on my smaller tank. I have about 20 shrimp, 2 scarlet badis and 4 endlers so I don't want to add more fish (as in otos) So what other snails will be great for algae but nice to my plants, shrimp and not leave scatter eggs??