my ladies are having some issues. here are the specifics: NFT grow, 18 gallon res, RO water changed weekly, adding cal-max. General hydro flora series nutes. oakton pH and ppm meters. keep pH between 5.7 and 6.1. and ppms between 650 and 850. 1000w hps. temp stays between 70 to 80 degrees. smaller leaves are curling under, some of the bigger fan leaves are curling slightly and some of the tips are drying out and curling upwards. jack herer and ww strains. looked in the bible, could find things similar, nothing specific. any help would be greatly appreciated
curling leaves typical of overfertilizing.... make sure lights arent too close either... any burning AND curling is most likely do to overferts.
WW is fert intollerant and burns easilly....running both strains in the same res will possibly be difficult maybe just move it to a soil grow, or you will be stunting the JH which does like to feed