I think it's always a shot in the dark, when you're hazarding a guess as to why two different tanks with seemingly similar statistics, experience such different growth rates.
My tank has never been really stable, for example. I don't have an auto top-off, and my water changes were sporadically regular. I dosed for Ca & dKH, except when I didn't...etc, etc. But I experienced some pretty crazy growth in some corals (some of those SPS). Others, like my purple mushrooms, which by all accounts should be spreading like wildfire, split at a snail's pace.
Having said that....what is your bioload like? Livestock? Do you test regularly?
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~Drew
10G Nano * 10G Sump * Deltec MCE 600 Skimmer * JBL Viper 150w MH * Zeovit * Vortech MP40W
Millions long for immortality who do not know what to do with themselves on a rainy Sunday afternoon. ~S. Ertz
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