Glookies by Barney's Farm - Hydro 3x3

Well on day 7 I did a rez change and went with higher concentration of nutes (1.2 EC) and the ladies did not like it at all. I was also overwatering them because I kept the top feed on and when I discovered both of these issue I cut the solution contentration in half and turned off top feed. It was also suggested to me that my rez was getting way too hot (reaching 79* during the lights on cycle) so I invested in a chiller. I also added a 80L/min air pump to the setup. It's noisy as hell but makes good bubbling. We are now at days 14, I have been feeding them with .55 of EC and keeping a steady 5.7 PH. They have recovered this week except one that is really slow on growth. The older leaves still show sign of nutes burn just to remind me daily how badly I messed up. I also have a KingBrite 480w 3500K led pannel on the way that should really get these going! These Glookies are growing fast even with my beginner mistake and the leaves are HUGE!