A Keeper's Grow

So, after watering last week til pots were heavy, this happened on the third day following. I did get the marshydro TSL2000 so i think I messed up on the dimmer setting rather than setting it at 25% I set it the same as the Marshydro TS1000, for veg, at 50% they are tired from that exposure and new heat. Same food regiment that's listed above, water ph is 6.8 before nutes, 6.3 after. Soil's at 6.25-6.35. Looks like magnesium and or zinc to me. Soil is still saturated 3inches below top, clip fans died jjjeeeezzzz (new ones today). Looks like the purple stems are phenotypic, though, I'll be increasing my metrop calgreen supplement by 2.5ml when things dry just to be safe and see. So it looks like a number of factors that changed over the last week and a half have cause some issue. Any suggestions folks? I need to troubleshoot with yall. ***irrigation issue and mag deficiency*** thank you experts!!!