The Official Asylum Reef Tank Thread

I just ordered two 400w 14K HIDs and two 65w actinic CFs for $160.

I read somewhere on the webz where someone measured the spectrum over the life of an HID and found it stayed pretty constant for a while and then shifted quickly long before the intensity dropped significantly. I have no recollection of anything like that for CFs or T5s but you can see the ends blacken on them so you know something is changing.