Hi. I have got problem with my plants. They are wappa clones, 6 weeks in flower. They are in recirculate top drip system with 10cm grodan cube.I water 3x15min during light on. I use RO water plus CalMag with Flora Series EC 1.3 . PH is 5.7 . I use 400 watt hps in cooltube. My day temp is 22-23 C. Lamp is 25 cm above plants. I cheack with hand, no burn, little heat.
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