It's on day 57 switched it to flowering about 2 weeks ago it's hydroponics ph tester broke and not sure of the temp. Sent from my iPhone using Grasscity Forum
without ph or ppm, can't really help. something is definitely off though go get some $2 strips from walmart
Looks like it could be light burn, especially since it mainly looks like the top is affected..what are your temps, light setup, how far away is the light, etc. More details needed