They'd work basically the same as three Skys, only better spectrum... The manufacture's own spread guidelines are almost exactly the same.I'm not quoting neptune in that statement. I'm quoting people I personally know that have the Sky. Also melevs reef. I don't think 3 xr30s would work over a 400 gallon tank
Edit... Melev's reef has never said 3 radions won't work on his tank, by the way, he just likes his 3 sky... Which i am sure he got a nice deal on, got to hangout with a buddy doing what he loves, and also got to promote his youtube channel...
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