Tank is 2 years old.
I only have 5 mini colonies ( all about the same size and bought 1-2 weeks apart). All SPS seem to follow the same pattern. Great polyp extension for 2-3 weeks, then polyps stop extending and they STN from the base up over 3-4 days.
Montis and Acros both go this way. LPS grow great in low flow areas of the tank.
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