I've been watching this grow from the cheap seats. Kudos to Solcielo for the journal and the improving second grow. Great work brutha!
As to the Inda-Gro vs CMH choice I'll throw my .02 in here. Not withstanding the higher operating temperature of the CMH you have color shifting that occurs within the first 100 hours and continuously shifts spectrum as halides inherently will do. Google up 'metal halide color shifting' and you'll find lot's of industry articles that discuss this phenomena. Here's one;
"Color variations among MH lamps of the same type can be much greater than color variations among incandescent lamps of the same wattage or among linear fluorescent lamps of the same rated correlated color temperature (CCT). Color variations among MH lamps are particularly noticeable during the first 100 hours (h) of operation. Color variations can be minimized by selecting MH lamps of the same wattage, from the same manufacturer and orienting them with the same operating position (e.g., all base-up). MH lamps also exhibit color shifts as they age, more than with either incandescent or linear fluorescent lamps. Group relamping will help to minimize color shifts as lamps age."
So as an area light goes the eye does not notice the wavelength shift unless there are multiple lamps which can all be seen together and some have been changed whereas others have not. Then the eye will pick up the color change. However as a grower it's more important to achieve stable PAR wavelengths and intensities. Induction lumen output is very stable and depreciates only around 10% up to 70,000 hrs. So if your mother is grown under a consistently stable wavelength and intensity then clones from that mother will be genetically predisposed to those conditions (as long as they're in PAR ranges) and successive generations will see increased yields.
On another note; I was wondering if anyone has tried outdoor seeds under these lamps to see if these wider spectrum PAR lamp ranges allow successful indoor growing?
Sad to say though that is a far off dream as the next few months I will be way to busy to grow. 
