Really the only reason I did a second one right away was because I've done a chemiclean treatment once before on this tank when the cyano issue was much less severe, and the cyan began to return in the same spot the same week, leading me to believe that I didn't get it all in 48 hours. I wanted to really make sure it was dead. It was probably overkill, but nothing seems the worse for wear today. All the corals that were shrivelled are looking normal now.
It's not that the cyano was ever really *that* bad, but I'm a neurotic perfectionist, and I didn't like the trajectory things seemed to be on. Someone standing in front of the tank, at a glance, would only have noticed a small patch of it in one spot on the sand, but when you got up close and started looking at the rocks, you started to realize that there was way more of it than it at first seemed. Also, anywhere that my corals would touch and fight, there'd be thick tufts of it, which seemed to be preventing the tissue from being able to heal after I trimmed back offending branches.
On a side note, maybe it's just a placebo effect, but when I looked up from my computer a few minutes ago I thought "hot diggity that water is clear!" It's like practically glittering. It's making me think that I should run GAC more often, this is only the second or third time I've ever put it in.
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