if i were you i wouldnt do that you could get electricuted or it could start a fire and you dont want that to happen i only use hps lights for both flower and veg and the internodes on most of the plants i grow are 1/4 to 2/4 inches and thats good enough for me but you should try and buy a complete system from ebay
ismokealldaylong420 Reviewed by ismokealldaylong420 on . Metal Halide and High Pressure Sodium question I need to buy a 70w metal halide ballast for an inside grow i'd like to start. I can't even find one right now but if I do and would it be bad to use a high pressure sodium lightbulb during the flowering stages on a metal halide ballast? I'm not sure if they're set up the same, just wondering to save some money. Rating: 5