Hi! I have a frag of zoas that has had some red hair algae pop up on it. I've had trouble removing it by hand because I'm afraid of damaging the zoas. Does anyone have any suggestions? Cleaning crew for the tank is a few turbos, astrea snails, an emerald crab, and a couple of red leg hermits. The tank is only an 8 gal nano and has been up for 6 months. Thanks!