Cal-mag deficiency?

Is this cal-mag deficiency first time my plants have done this I have always used cal-mag plus this time I bloom city cal-mag

Do you use RO water or heavily filtered water? Cal mag is a hard problem to have

Slow down on nutes, your good.if you have super dark leaves and brown spots, likely over nuted, not deficiency. New leaves look healthy.

Skewbong said:

Slow down on nutes, your good.if you have super dark leaves and brown spots, likely over nuted, not deficiency. New leaves look healthy.

Click to expand...

indeed. the dark leaves are fucked up from excess salts... luckily the new growth is ok. the plant shows signs of P-def. It may been locked out.... but the plant looks sort of light hungry... or is this a strain that is known for long internodial length & thin stems + this typical tendency to purple their stems... Do you use Mycorrhiza?