Adjusting my light intensity w/o hurting my plants?

My HLG 150w is currently about 3/4 the way to full intensity and id like to get it to full intensity on the driver without hurting my plants in there what’s the best way to do so. Have two autoflowers in there currently at day 26.

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What height do you have the light at? Any pics of the plants?

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At about 20 inches light is at top of 2x2 maybe 20 could be less by now

Why? Do you need to increase the temperature in your tent?

No just wanted to avoid stretch get most out of yield

I think at 150 watts you’re going to have trouble getting the full potential out of 2 plants. Did you defoliate them or are they spaced that way and slim? Also, I’m going to tag the light guru @dbrn32 in.

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Did not defoliate, spaced out, they were reaching at first but now are slowing down on that for most part. I did some light LST. I’m aware they won’t be full potential but they are my second ever grow, so it’ll do. I just want the light to get up to full power and get the most out of what light I have at this point and onward.

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It’s a pretty reasonable light for a 2x2.

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My mistake, I thought more wattage was needed per plant. That’s why I’m here, to learn.

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I agree it’s plenty, I’m saying my current 150w is at 70-75 percent light output on my driver, I was wondering if I need to get it all the way up to full power and if so how I could do so without harming the plants

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You could crank it to 100% at the top of your tent and slowly drop it down while at the same time watching the reaction from your plants. Just a thought

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When you get into better led lights they are producing pretty significant amount of light per watt. Back when most lights were fairly similar in performance it was common to use a thumb/eyeball approach to the amount of watts a light consumed and determine how many square feet of coverage it would provide. A lot of people still repeat this out of habit or not knowing any better, but the plants react to the amount of photons over the canopy not the amount of power a grow light uses to convert electricity into radiometric light energy.

The light in use here isn’t going to pull every gram possible out of a 2x2 tent but it should run to about the peak efficiency of a grow this size. So if everything else was equal a bigger light would most likely increase harvest weight. But if you were looking at something like grams per watt or grams per kwh would likely go down if more light was added. Imo this is a pretty solid setup. Every 2x2 here 4-5 years ago was sporting a qb-135 kit and it was pretty normal to see 7-8 zips dry out of them. This light has newer led tech and slightly larger driver so I’m sure it’s capable of more in the right hands.

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Awesome! Great explanation. Thank you!

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