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I am going to run a par 38 led over my 8 gal nano and I want to try grow some acros or montipora once they hit a size to big for my nano ill out them in my 55
It sounds like it would work to me. People use Par 38 bulbs to grow SPS corals, and one over such a small tank would make the area needed to cover very small. Can always give it a try with a frag and see how it goes.