I've been up and running for about a year with an IM 30g nuvo. I have a few sps and a few LPS two of my sps are doing fine the other that cost 150 is not doing so well. I've never lost a coral. I have a kessil a360we. I think I need to add more light. The sps thats not doing so well is only doing bad on the underside. I like the radions. Would a radion xr15 suffice or should I go xr30. Also should I leave the kessil on as supplemental lighting. Or should I just buy another 360 since that's what my corals are use to and have two kessil on there??? Any help wuld be appreciated.