• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

can u tell me what light this is??

Picasso345

Well-Known Member
Is this a trick question?

400 watt Metal Halide Horticultural Grow Light Bulb
SPECIAL PURPOSE: Blue Spectrum
For EXTREME Growth​
 

bush basher

Well-Known Member
it is a metal halide as you can see by the two different fillaments inside. hps usually hav 1 long bar and a little glass filament thingy.
 
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