I don't know if this helps you, but I got mine as a small frag and it wouldn't grow at all. Then I moved it to a area with better flow and more light, and boom... Now it is growing and growing fast and the green is very beautiful.
I also have to mention that I switched from MH to LED, which has made a world of difference for my sps.
Here is a pic of what it looks like now, it took about a year to go from a plug size frag to this
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I also have to mention that I switched from MH to LED, which has made a world of difference for my sps.
Here is a pic of what it looks like now, it took about a year to go from a plug size frag to this