SOURCE: 400 watt grow light
ballast is weak ,or the bulb. i would never by the combo lights /use a hi pressure sodium for both vegative state and flowering.you dont necessarily need a MH..
SOURCE: I have Philips growing
I think it's less a problem with your lights than with your technique. Are you protecting these plants from the sun for a week or so when you put them out? Put a shade over them, let them have only indirect light for a few days, then give them a little direct light, then more. Gotta ease them into things, to them the difference between your lights and the sun is like the difference between a drinking fountain and a firehose is to you and I.
lp
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