You have a pic of the tank? One with all 8 bulbs on, and another with 4 bulbs on? Will be relamping my 8 bulb ati Powermodule soon and thinking about what bulbs to go with.I’ve been through halides (mogul base and double ended) loved them you can’t beat the shimmer effect or even replicate it with any other type of light source except the sun itself...Lol Especially the mogul base Radiums. Ran a couple Radions and loved the versatility. But hands down for me are T-5’s. Just love the different spectrums you can play with and the pastel colors you get from your corals. I’m running an 8 bulb ATI fixture with LED (blue) supplementation. Blue plus, blue plus ,6500k ,blue plus,Giesemann tropic, 6500k, blue plus, blue plus.