Those of you with Vipar Spectra 450w LED grow lights

[Eliot Pryor]

Very nice. I'd harvest them.

 

[stabmasterarson]

I have a 450w that I got last February. I use it for flower only. The manufacturer says keep them 12 inches from the tops. Mine sometimes (like always) get much closer. If its messing up the smoke maybe its for my own good because it is killer shit as is. I have 2 Blackstar 135w that put out more light and they never burned the tops, but one of those cost more than the 450. They have been running 12/12 for 6 years trouble free and still going. Strain. strain. strain. Its the strain.

Following the manufacturers suggested height, I completely destroyed/burned a plant I was doing earlier this year. I kept treating the distress signals as a nutrient problem, and realised my mistake far too late to salvage it. Second time around I went with greater distance and switched to a 300w Kingbo for late flowering, just in case haha.

It is a great light, but I had to learn the hard way how to work with a powerful LED.

 

[Rootsruler]

Download a light meter app. YOU can then accurately measure how much light you're giving your plants and you won't burn them.