i've been thinking about adding 1 or 2 more actinic VHO's to my new canopy, right now it's 2 175W 10,000K XM bulbs and 2 110W VHO actinics. i've got an icecap 660 so i could run 4 VHO's with the MH's, was wondering what adding more actinic lighting would do and if it would be beneficial to do...