I have two 5 gallon betta tanks that I added a few extra plants to recently. Over the last few days, I have had an algae bloom, mostly brown algae. I took the plants out and cleaned them using water removed from the tank. A few days later, it returned once again. I am limiting the amount of light but think I need to get some sort of algae eater. (I have 1 Siamese in my planted 26 and he does a fantastic job). Is there some sort of snail that can co exist with the betta that would help?