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Well you can always wait to lower them until you get a fan if you think itl help.
Or just make sure they are just above 3 inches for now. Burning at that distance would be hard unless your temps are really high. Do you have a temp humidity gauge? How far away are they in those pics?
I meant the plant can be burned on its edges by uptaking nutes in the soil. Or if the pH is off, it can get nute lockout and not be able to uptake what it needs.
You can get a liquid or electric pH tester at any grow shop ie;
worms way, everyday garden, or northern lights and other garden shops.
Yes, you dont want to top until youve got some good side growth going on. Which looks like at least a few more weeks away for you.
Youve got plenty light for now. So you have a mix of K temp bulbs right?
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