So I recently bought a dimmable 600w hps light and ballast I dimmed it to 400w I’m in 4x4 tent when I checked them this morning 2 hrs before lights out this is what I was faced with see picture below the strain is gorilla zskittles temp lights on was 25.5C and 2hr before light out was 22.5C I have a 6’ exhaust and a 4’ intake
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Yeah like Elliot said, looks like heat stress. What is the light distance between the HPS light and the top of the plant? Also, where exactly is the thermometer placed in your grow space?
What is up my grow bro. That is looking like a little bit of heat stress to me when they Canoe up like that. The best temperature range for the day is around 78-80°f. And at night 68-70°f. Lol i dont use the metric system. Try moving your lights up a little bit.