Sorry to disagree with you Doug, but I was really disappointed with the AquaScience 17,500K's that I bought. I found they looked AWESOME at first, but the color spectrum
really faded within 6 months. The bulbs are now 9 months old and look like 10K's.
Imo, if you have good quality MH bulbs running with well chosen ballasts to produce a respectable amount of PAR then who cares about the PAR of the
supplemental T5s? Plus the fact that in your case you have 4 T5s, so even if you choose T5 bulbs with lower PAR you will still be getting a fair amount of PAR in addition to the MH. My preference when using T5s as color supplementation for MH I like to use an equal amount of KZ Fiji Purple and UVL Super Actinic.
