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Hi Jay! How many ppm's of CO2 are you maintaining? In my last run with NYCD, I averaged 1 ounce per foot of plant. I was running around 1800ppm of co2, in a straight coco/perlite using GH Nova Series and using 2 600w's for 6 plants (3 plants per light). All were in 3 gallon bags. hope this helps.

Hello! Hope I am Posting this in the right place..... Anywho, I am having an issue with one of my 600w ballasts.. the internal fan has ceased to run, but ballast "buzzes" and allows a little electricity to reach the bulb, but not fully ignite it. I have tried a couple of different bulbs to no...