Maybe 6 of the RS ReefLED 90s paired w/ the T5 hybrid? You have 2 so you'd only have to buy 4. That's still cheaper than buying 4 XR15s and then you have 6 lights + T5s.Lighting thoughts. Not sure what to do now. We were originally planning on using 4 Red Sea ReefLED 90 lights with the T5 hybrids, because we already own 2, so that would save some money. Now I'm worried that they won't be enough to grow big, beautiful SPS colonies. Wondering if we should bite the bullet and get 4 Radion XR15s instead or even XR30s (still to be used with T5 hybrid). Anyone have any thoughts? We do want some LPS and leather corals also.