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Old 12-10-2007, 05:33 PM
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Question question on HPS bulbs and MH bulbs
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Question on which ballast (MH ballast or HPS ballast) can function properly using MH or HPS bulbs interchanged? help is greatly appreciated.. will save me some cash
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Old 12-10-2007, 06:34 PM
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get the ballast that can support both lights
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Old 12-10-2007, 06:36 PM
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this is called a digital switchable mh/hps ballast
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Old 12-11-2007, 12:35 PM
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Or You Can Get A Conversion Bulb It Goes From Mh Ballast To Hps Or Vice Versa!!!
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Old 12-11-2007, 12:51 PM
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Best -> Dual-spectrum (both bulbs at the same time) - EXPENSIVE
Next Best -> switchable ballast (both bulbs at different times) - PERFECT FOR GROWING
Least Best -> Single Ballast w/Conversion bulbs (this is least best - or worse option cause conversion bulbs are far less effective than regular bulbs.) - ONLY IF YOU HAVE TO

DO NOT attempt to use an MH bulb in an HPS ballast (regardless of wattage) or vice versa it is a fire hazard.
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Old 12-11-2007, 01:30 PM
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i have a switchable sun system ballast, it has a lil switch for changing between MH and HPS. it was by far the most expensive piece of my grow though, buy it online to save money.
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Old 12-11-2007, 08:10 PM
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thats whatsup thanks for the help... i kno i heard that u wouldnt have to buy two seperate ballasts but i jus wanted to make sure which ones work with both HPS and MH

chronicle.. how much did u end up paying for yours?
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Old 06-16-2008, 04:06 AM
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i heard of people using hsp ballists with Mh bulbs of the same wattage
 

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ballast, bulbs, hps, question

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