Well if it definitely isn't the nute recipe....then I'm stumped....

What has changed from the last successful no problem harvest to these??? Plants don't just decide to not grow efficiently....something has to be different.... How clean is the equipment??? Are there any light leaks into the dwc buckets res'??? Any light leaks into the space during dark hours??? When was the last time the light bulbs were changed???

If it were I in this situation, I'd re-veg, take clones and start all over.... Clean the shit out of all equipment and make sure I stay on the right path....but that's just me.... Are you sure this prob has nothing to do with how you are feeding??? How long have you been growing hydro???

I too use kool bloom in powder form....however I only use it during weeks 5 & 6 of flower....

CGI::::::