Join Date: Oct 2012
Location: Eagan, Minnesota
I have used algae wafers for my otos, but my bettas usually end up eating them all. I think you might be right, it's just weird that it comes right back after I gravel vac! I do have some MTS in the tank, at least 5, not sure if they have reproduced yet so not sure if they help. Let me know if you find a cure, lol.