Happy Guerilla

Considering that it is an outside grow you might want to inspect for insects on the underside of the leaf and or along the stem, that being said it is only on a single leaf. It could be early signs of a deficiency or toxicity, I would personally leave the leaf if there were no signs of insects so you can monitor how it changes. If the leaf stays the same then it could be light burn from water accumulating and acting like a magnifying glass in the heat. However, if the leaf continues to degrade and change colors you could use that as an indicator of what might be wrong. You could attempt to flush with a half or quarter strength nutrient if you are using any, and or PH adjusted water to possibly break up any salt accumulation you may have in your soil. Hope this helps.

Pull it off.. problem solved.. if it’s only on one lower leaf I wouldn’t worry about it, it’s outdoor the leave’s are going to be eaten at some point but your plants are big enough to handle it now. Only when they’re seedlings you need to worry about it as much

Take a good look overall if you find any bugs , if don't then it may come from your nutrients. Be sure to use calmag, when feeding don't let the nutes touch your leaves. Good luck

Always aim for 8-10 oz per plant

If you are lucky, maybe an ounce per plant, maybe more, maybe less.......

keep it healthy and it wont disappoint.

Spider mites leave 100s of tiny white dots in the leaves and webs everywhere, both of which I can not see.

Hello. Turn up your fans. The Mites are still there but it's hard for them to make their webs and the population doesn't explode. Dilute 3% Hydrogen Peroxide to 1% and spray on all leaves top and bottom. Repeat every 3 days. 50% iso alcohol with 50% water and a couple of squirts of dish soap. Test this one first on some lower leaves. If there is no difference in 6 hours then spray but don't get any on the roots. Works best when there is little resin showing, the alcohol can strip the resin off. On some cotton balls put some eucalyptus oil and place on the branches where the most mites are found. The smell drives them away. Or if you want, Spinosad kills everything and is good for organic too, but leaves a funky taste on the buds. Don't use neem, it leaves residue too. Good Luck. Chuck.