Nice looking herb my friend - good work. Yeah I am finding most people hit max PPM during the last few weeks, not exactly sure where he is getting his information from but he's been growing for like 10 years so I trust his opinion for sure.

He does NFT and can test how much nutes the plants uptaking by taking his PPM frequently, and he said they peek out at five weeks, and then slowly need less and less nutes. Kind of interesting.