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Right now I just have some green star polyps.. I'm planning on keeping other softies and lps with MAYBE an sps but for sure a green bubble tip anenome down the road.
I would start that out at somewhere around 40% blue and maybe 30% white. This fixture you have is much more powerful than the t5 fixture you are replacing. You could increase it slowly over a period of weeks, so not to shock the GSP.