hey Steve, i've been running 2 FP 3 SB & 1 10k all KZ bulbs & have been suspicious of the 10k ever since I put it in, as the reason for lighter purples, as I've been trying pretty much everything to get them darker with the exception of that bulb. I'm a bit lo on K but its at about 350mg/pl & going up, there have been some improvements with color on the growth tips & slight;y in the main branches, but I deffnately think I'll change the bulb out for something higher k. It'll be interesting to hear what the Dochs lights r.....
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