yeah this is what ive heard as well. I saw these bulbs on ebay they look very promising. Some grower i heard say that the growth of his plants under a dual arc bulb was incredible. Its not that much more expensive, and so what, your bulb dies after a year 2 years, just buy a new one itll be worth it!!!
DOES ANYONE HAVE A GROW JOURNAL OR MORE INFO WITH THE DUAL ARC MH/HPS BULBS!?!?!?!