RDWC - Sunset Sherbet Auto

I upgraded my system, so now i can tanke every bucket out of the circulation individually. This gives me the opportunity to react to an infected, weak or sick plant and can simply put a pump into her bucket to make her stand in her own system, so i can test different nutrient solutions, ec or ph, waterlevel, etc. Maybe i can save some plants who can not keep up with her crew elseway. Maintenance should also be easier now. I also installed 2 airstones to the reservoir, because i am too lazy to stirr, when i add something to the solution. Then i got some 45° feeders to make it look better than thje ducktape version. Next run i will bury them right from the beginnig in an ankle but now im afraid to disturb the plants too much in this stage to get them out just to put the feeders in. Nutrientwise i added some iron to see, if the yellowish growth of the new leaves are getting better. The pic shows, that they got way greener, but also looks a little tired. Hopefully they will recover because i also installed the second light, but the timer wasn´t set right, so they got about 2.5h more light. Wasn´t that nice because i measured around 600 PPFD on the plants, so they got to work a little harder yesterday and the time without water in that stage while upgrading the buckets wasn´t helpful either.