Kinda confused never had this problem before using floranova grow plants are only 2 weeks in the 'grow cycle' (after they were cloned and showed roots) pH 5.8 ppm 800 3x 1000 watt hps 18/6 the leaves look more yellow than you can see in the pictures. plants also look droopy =\
more info needed to make educated guess... temps humidity ect... everything above reads good, so post those specs. there are many reasons leaves turn colours. i like to eliminate what you know it cant be, and go from there. 3k? man thats some heat.