I have a 72in Aquatic Life light over my 220 and initially swapped the stock bulbs for Coralife. Then i switched them all out to ATI on a Christmas deal a few years ago and never looked back. i don't have a par meter but to me the colors seemed more vibrant plus the coralifes i had were wonky and didnt last nearly as long as my ATI's. I guess it really depends on what corals if any, you are wanting to keep. At 50% off, it might be worth the spend if you can justify the $ upgrade in switching to something else these don't work.