I had a velvet outbreak 8 weeks ago today that killed off all my fish unfortunately, I’ve been fallow since then but for some reason had a green hair algae outbreak as well as spikes in ammonia, my phosphates , alk, cal, nitrates, ph are all well within recommended ranges I’ve been able to take care of the ammonia but still have trouble with the green hair algae. I really want to start getting fish back in, mainly a lawnmover blenny to help out with the GHA, just dont know if its too soon? Any suggestions? I have a cleanup crew at the moment with snails & emerald crabs but not sure if its ok to add fish yet.HELP