Mint Jelly and purple haze in 2x2

A few big changes. First is that I completely burned the plants with nutes. i was just following the grow guide, but both plants went sideways on me. As a new grower, it wasn't obvious at first. However, i think the location of the burns on lower leaves at the ends, plus a quick google search that showed a lot of autos are sensitive, and then it got resolved. I went down to 675, and the burn slowed down but did not completely stop growing. A last change to 470 or so ppm, and now they are stable and growing like crazy. Second big change is that flowers just started showing up on both plants. Maybe that was due to the stress of the nute burn, but it is also just starting into week 4. updated with day 28 photos. Plants knocked ppm from 465 down to about 120.