Hi, I am new here and fairly new to giy. I am growing in canna coco pro and adding 3ml of calmag plus per gallon(180-190ppm) but I think I am causing potassium lockout from adding too much calcium. How much cal mag do you use in coco with gh flora nova?? I am growing RQS Northern Lights autos under a 600w dual spec hps. I read on a LEDRF thread that he adds 1ml per gallon but his website says 3ml per gallon...is this light dependant? I have flushed my plants and started using 1ml per gallon along with base nutes....did I make the right call? It looks like it has slowed down the spread of it and stopped it on some plants so far. Any help would be much appreciated.