I have two questions to ask I'm not sure what to do. I have a 20 tall and I tried several different lights and can't seem to get anything to grow is the light here at aquarium co op .... the light I should have bought in the first place won't be strong enough to get to the bottom and grow plants?? Second question I see an aquabad that they are selling the Colombian giant Rams Horn snails.. are these legal to own.. oh I live in Michigan so they wouldn't live if they escaped.. LOL thanks for your time appreciate input.. swimming free