400w grolux

My 400w grolux light bulb by sylvannia seems to not be as bright as before....time for a new bulb or is it something elsE?

Aerohead said:

My 400w grolux light bulb by sylvannia seems to not be as bright as before....time for a new bulb or is it something elsE?

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How long have you been using it?

Grolux Bulb - 58,000 initial lumens; 24,000 hour life-span. The Sylvania Grolux bulb was the first bulb in this country that was designed from the ground up specifically for growing plants, has the highest PAR rating (meaning it has the highest plant-usable light output) of any 400 HPS bulb on the market and produces 30% more blue spectrum than a standard HPS bulb. It is one of the best 400 HPS bulb you will find in the U.S.NOTE: Please consider choosing the Plantastar bulb instead of the Grolux as customers have been experiencing higher than normal failure rates with the 400W version of the Grolux.

400 HPS EuroSystem - Complete | BGH

I am in flowering phase now, the light has been good i have used it over 2 grows, this being the third now..just seems alot dimmer...

i can just about look at it, where as b4 you have no chance

I've always heard three grows is the max.

Right, looks like its new bulb time then

hope youre still around? I have the same bulbs. I been flowering 10-11 weeks and very little trichs. I thought about bulb and changed it tonight> i noticed the same difference in brightness you observed.

What stage were you at? did you see a reduction in trich formation? My buds are a good size just not fully ripened.