Hey Jim, sounds like you've about got it. I had to keep the dead HA cut back to nothing and still pulled out my rock & scrubbed it in old water change saltwater to get it all off. I saw the HA die off effecting my numbers once there was more dead than alive. I stopped the AlgaeFix two weeks after I scrubbed the rocks. I also use NitroBac to get the Bacteria population building back up. Several weeks now and only a couple of spots tried to grow back. I switched over to hermits (White Leg & Red leg from John at ReefCleaners) and they stay after anything that pops up now, and yes, they did eat most of my snails in the process. Trade-offs! Good luck!