I’m starting to get Ulva growing on my rocks, not much, but it’s starting. I just had to shut down my nano tank due to Ulva taking over EVERYTHING. It literally grew on my stonies and smothered them, and is impossible to get off without destroying stuff. What is causing this stuff to grow? Nothing from my old tank went into this tank and it’s just popping out of nowhere. I have a tang and several hermits and snails, but what else can I do to ensure this stuff doesn’t take off?
