I actually had a real issue with aptasia's. When we put in some LR
, we had 3 large ones. My husband thought they were great. Well I finally decided to terminate them when they started to spread. I took some of the water from the tank and put it in the microwave....took it to boiling...used a syringe and squirt them. I had to do this to all the new ones that were already there, but they didn't spread because of the water....they had already spread. since killing them with the hot water, I haven't seen any in weeks. I have a 65 hex and had a ton thanks to the hubby.