I have a question about feeding my new snails. I bought 2 to eat the brown algae in my tanks and they went right to work. Both tanks have plants and algae but what do I feed them when the algae is gone? I have bloodworms, brine shrimp[freeze dried], flake food and shrimp pellets. Do I need to feed them veggies? What of my food supply will they do best on? Do I need to buy a special food?