I'm really interested in this bulb, but I was wondering about the difference in wattage between the bulb and ballast. Does running an 830w bulb on a single 1000w ballast draw the same as running a 1000w bulb on a single 1000w ballast?CMH Fucking ROCKS!!!! Have you done any HPS grows with you current setup to compare to the CMH? If so, I bet the CMH produced better results, their spectrum is completely unmatched VS any other HID lamp. Philips released a new line of CDM (ceramic discharge metal halide) lamps that run from 145W to 860W, the 830W & 860W (Pictured Below) runs on 1000W magnetic MH ballasts and is rumored to be the next HID game changer, this bulb is going to produce some AMAZING RESULTS!!!!
(http://www.ecat.lighting.philips.com/l/lamps/high-intensity-discharge-lamps/ceramic-metal-halide/energy-advantage-cdm-lamps-with-allstart-technology/928601174701_na/)
(http://www.growlightexpress.com/ceramic-metal-halide-bulbs-9/philips-energy-advantage-cdm-allstart-lamp-830-watt-1943.html?zenid=bgpakhv5vtb9ifmptbi2dpi747)
FYI: Read the description Grow Light Express has for this lamp!
Yes I replace that as well every so often have heard of it having some drop off after a while, not sure if its true I just change it because its cheap, easy, and it doesn't hurt any to do it. I don't want to use anything that has the propensity of getting my op noticed.I do replace my cap every couple years or so, just so I know its always giving off proper lumens. Maybe not necessary, but its something I do.