I've been thinking of getting a couple Nerite snails but having trouble deciding. I have a few live plants (but an order coming next week. Yay!) and I will be moderately planted at the end of this rescape. My first concern is the Cory cats (don't want them having to compete) and the Rainbow shark - which I thought I read would be a threat to the Nerites? I don't know where I got that info but someone correct me if I'm wrong. "Tim" is a whopping 2" long now and not much of a threat to anyone. :-/ (He's a disappointment to his family lol) Second concern is lack of algae in my tank. Don't want to jinx myself but just about the only green I ever see is on one large and one small (out of four) rocks. I haven't had any on my glass at all. I feed the Cory cats sinking shrimp pellets and veggie wafers. Will this be OK for the Nerites to eat as well? Should I get "algae wafers" for them? Any advice is appreciated!