New upgrade

This week I could see the spots I mentioned before getting worse. After some thought I came to conclusion that they are hungry, so today I raised the PPM to 1200. I came to this conclusion because the overall color of the leaves are light green and the first leaves to suffer were the bottom ones. I was afraid that the wall removal from the rock wool would limit the roots from growing so I decided to transplant them onto the coco. This is the final pot, I promise the next grow I will do more transplants. The PPFD was around 220. I changed the lights from 70w to 200w. 200w is half of the quantum board on.