Gorilla Shizzle Autoflower

Brother you need a ph tester kit so important so as to dial nutes and not get that nutrient lockout going on.. The newer light may have been a little hard for it to adjust to especially if it a to close to the tips of the girls he will be hit my hot temps and light burn if not careful. You can get the ph test kits cheap but if getting pen don't cheap out or it will cause you a headache trying to calibrate a crappy pen .make sure that soil don't get overly wet either good luck man.

It looks like a phosphorus deficiency. Some times having excess of other nutrients can block out other nutrients. If this was a lower older fan leave I would worry about it. When ever you have a deficiency it's recommended to do a flush on her. If you use a TDS meter see what her runoff TDS and ph are in range. Adjust your flush water to be 5.8 to 6.5. I run my autos 5.8 to 6.2 whenever possible nutrient absorption is best in the 5.8-6.5 ph range. The last 1/2 gallon of your flush add your nutrients. Any leaves that where effected will not improve but it will prevent unaffected leaves from showing signs hopefully. It looks like you have a number of weeks till harvest sometimes the leaves look worse for wear by the end of the grow anyways. Hope this helps.👍