About half year ago, I tried Otocynclus for controlling BG algae. I bought seven of them at Petsmart. Interesting and attractive fish, peaceful and busy with eating those algae. Despite plenty of BG algae, they did not live long. I offered them a steamed leaf of spinach sometimes, they ate it well. One by one they died. Only one still survives, he is about 6 months old now. I have to buy them again for BG algae control or find another organism for that purpose. Where people buy Nerite snails?