I’ve been trying to use these viparspectra p1000 with the Samsung qled chip unsuccessfully. The foot print is like 2.5’x2.5’ flower footprint at 18” I believe, I had 2 in a 4x4 grow tent hung catty corner in two opposite sides of tent. Plants showed super bad signs of heat stress so dimmed the lights to like 50% still heat stress signs, took one of the lights out and turned it down to 30% and hung it around 3.5 foot above canopy. Does this sound right, and here are results.
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welcome to OG!
the light read to be 100W. what happens when you raise the light? still signs of stress?
I have 300W set up in my 3x3 tent with the light mounted as high as I can. running full blast.
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After removing one light, the one left is as high up in the tent as it will go. Was still showing stress at like 75%-50% power, it finally started looking decent at 30% power. I’ll attach image before light reduction, oh yeah I forgot to mention that it stopped growing height and started bushing.
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By the looks of the plant, it seems healthy and thriving. In the mean time move the lights higher. Do you have a light meter to measure light intensity? They are inexpensive and take the guess work out of the equation. Good luck!
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