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petterb
11-19-2008, 12:28 AM
i have three 400 watt MH bulbs & balast, can i use them from veg. through flow.
DTRave420
11-19-2008, 12:42 AM
i have three 400 watt MH bulbs & balast, can i use them from veg. through flow.

Yes...Some people do an entire grow with metal halides...You also have the option of using HPS conversion bulbs...These are HPS bulbs that work with MH ballasts...
detroitfish
02-04-2009, 02:40 PM
sure can best to change kelvin or color temp for flower