what happens if ur bulb is toast

u will lack proper spectrum intensity- decreasing yeild possibly not enough to grow properly
 
best to just get a new one as soon as possible if your worried. ask him how long he used it. It will still flower fine though, just lacking full spectrum like stated before....
 
ask him how many grow he has on it, how is the startup of the bulb? take a while to heat up properly?
 
ive been told change them once a year, just changed a 250 after only 9 months, they arent expensive so why take a chance
 
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