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#1
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Hi guys, could anybody tell me if i need to change my 400w hps GROWLUX lamp with every grow?......the grow shop recommends this, any ideas??
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#2
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#6
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Nah mate you want to change it every grow. Your bulb will have dropped some of its output by the time you finish a grow. You want to give your plants optimum lighting so change it every grow.
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Its nice to be important, but its more important to be nice. |
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#7
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You're good for about a year. At which point HPS is around 80% lumen output. MH, you'd be down to about 70%. MV, even less(only bulb here with both *usable life*, and rated life expectancy before failure).
After 1 grow(under 6 months) it's likely still pushing out over 90% of the 'brand new'/peak lumens. No reason to change it so often.
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#9
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#10
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Like i said if you want optimum conditions and optimum results change it every grow. After 1 grow its gonna be less effective. 90 percent efficient is not what i looking for. What is the light gonna be like after your second grow. We are taking over from mother nature when we grow weed, so surely it is our job to provide the best conditions possible? The suns efficiency dont drop with each grow, so why should the lighting we use be any different? Second hand bulbs anyone? Only used for one grow!
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