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I am using a 400 mh to veg there a foot tall now and I want to start to bud but I cant afford a 400 hps right now but I got a hell of a deal on a 150 hps fixture, bulb and all 30$.......at a yard sale...lol my Q is ....if I put my 400 mh on 12/12 with the 150 hps on 12/12 , will that be enough to bud and have somthing in the end? growing in a 3x3x6 closet, 4 plants , mylar every where..soil, 5 gallon buckets.....who can help ?:(
A 400wMH should be enough to produce around 80% of the maximum yield that you can get from a single plant (depending on temperature, mylar, bugs, deficiencies etc).
Try putting the HPS at the side of the closet, for sidelighting. Youll get a few more grams because more light is getting to the lower buds. If you do this, make sure you turn it round 180 degrees every other day.
1 st question is your ballast mh or hps
ballast ? I have 2 one of each 400 and 150 ....member....lol
thanks swizzy , wouldnt a 400 penatrate ok anyway though there just a foot tall now ....only 4 colas per plant , sorta bonsied...how ever you spell that ..lol
Lol thats a good point Mobay.
But BlueDragon, some ballasts can accomodate either a MH or HPS up to whatever wattage it is for.
Although I think he said that he already has a MH bulb (meaning he has a MH ballast aswell), and also a HPS ballast because he said 'bulb and all'.
But do you have a seperate ballast for each bulb?
Oh and by the way, you can use a HPS/MH (whichever takes your fancy) for vegging and flowering - you just wont get the same results as you would using two seperate bulbs. Though there is someone I know who grows occasionally, and he uses a 1000w HPS and a 400w HPS together and last time he grew (Christmas... I got many happy things that day, namely an ounce of organic) he got a good few pounds. Ill try and find out how many plants he grew and what strain. I know it was a sativa, I just dont know the specifics.
Coulda been White Widow.
Yep a 400w will do fine, how many plants are you growing? A 400w HPS can do around 5-6 plants if youve got mylar, not sure on how much better/worse a MH is though.
If you use the HPS for lighting at the side during flowering, the buds will be a little denser and theyll grow a bit bigger aswell. You shouldnt have any heat probs with a 150 either, my 600w HPS doesnt actually produce that much heat.
Unless you touch it.
can you put a hps bulb in a mh fixture?
any one know where I can get a cheap conversion bulb for a mh ballast?
Nope.Quote:
Originally Posted by BlueDragonSmoke
Just use the two lights you have now. Using both combined will give you better results than using either one alone. I wouldn't spend the cash on a conversion when you have all the light you need already.
but I have a 400 w hps bulb just wondering if it would work with the mh ballast?
wow all these people and no one knows?
lol...sorry I didnt see .... nope ....lol