They do look much better....good. If they are knocking the ppms down that fast then Cyclonite is right and its time to up their chow.

I was taught by my hydro man to use 50/50 CalMag and grow nutes up until you turn them to 12/12. So if you put them on 600....300 would be CalMag and 300 grow nutes. I'd try the six hundred and see how they do.

They look much better but I'd probably give them a week to recover from all the excitement and get a little more nutrition under their belts before you turn them.