Browning leaves. HELP!

What does this look like? Been watering with ph 6.5... Was planning to plant outside today

Stress from burning, either too close to light or nute burn.

sometimes when its in weird spots on the leaf like that its caused to to ph problems. But i also see the start of a burning tip maybe over nute? I wouldnt worry about it though. lower down on the nutes a bit which will also help if its a ph problem. and make sure if you are using tap water that you let it sit out for 24 hrs first so all the chlorine is evaporated. most tap water in north america is around the right ph level if you are growing in soil ( soil if ver ph forgiving) but if you are mixing in either liquid or salt nutes too much then it screws up the ph levels. But the cool things about soil is that with a good watering without nutes for a week will flush out everything and get your ph back to normal. if its over nuting then that would be solved as well.