light leak = Hermie Seeds Wedding Cake

First day this week growth slowed, we had a weird weather pattern with very dry air for 2 days it was 40-45rh and the plants dried out and wilted. I watered first thing when I got home, the right two recovered in an hour the one on the left took a day to recover. 3 days later still slow and leafs yellow slightly, I figure maybe a PH problem and water with 5% flush 6.6ph lime stone aquifer water high in cal 8.0 from tap. The yellowing stops. The next day at lights on I blast it with a full chart mix of Cutting Edge Solutions +ph swing feed and it exploded since, regained much green. Light was set 2 days of 4hr only on 4-20 (lol I just got this), then 12-12. I have done this in and attempt to kick off flower stage because my experience with this strain is that it likes to hang on to veg stage forever some times 2 weeks of major stretching.