what is wrong with them? using flora nutes and they were turning a little yellow and curling so i emptied the res and filled with 600 ppm fresh nutes and cal-mag and this happens 2 days later. so i'm about to flush the calmag out but what do they want then if not magnesium? what should i do? thanks gc
could it be from too high of res. temps? a little too warm for the roots? anyone know the ideal res. temp?