I gained 3 otos with the purchase of a new tank. These fish belonged to the last owners. My tanks do not get very much natural light, and i cannot rearrange the room so that they do. I leave the light on for 12-14 hours a day, but still not a speck of algae. I really don't want to buy algae flakes. Is there some way to like harvest algae?? is there someway to force it to grow, maybe not even in my tank, but on something i could put into the tank later on?? thanks for any help