I found the same thing with the switch back to T5 Wayne.
I had certain corals that were growing like weeds under LED, but I had a lot that were stagnant, or lost all of their color.
I switched to T-5 and I was getting growth out of everything again … after about 3 months I started to notice certain stagnant browned out corals starting to sprout new life and morph colours.
That was enough for me … I've never looked back, and I'm planning an 8 foot upgrade in the next few months and It'll still be T-5
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