I had HA in my tank(see tank journal), but it is all but gone now. I scrubbed my rocks real good, and them put them back. Once back in the water, I could see a small amount of HA still on the rock. I went to the
LFS and got three Trochus snails. They immediately went after the HA that was left. Now I only have a small bit on a powerhead that they haven't "discovered" yet. They are amazing! I will continue to have Trochus snails in my tank and I will probably add another 6 or 7 by the time I am done.
