dwc root rot

Hi folks, I'm trying to get my hands on some Botanicare Hydroguard. It seems that it may no longer be available in Canada. I cannot find it anywhere. Can any of you confirm if it is still available in Canada, and if so, where? I've ordered some Voodoo Juice, but my first order arrived frozen...

Helping out a fellow grower on a dif forum, he just posted these pics. Water temp is 66*F and PH is stable. Seems pretty ugly and like root rot - anyone have additional insight on what this is (or isn’t)? He says thank you

HI there guys i understand that nutrient burn will show signs at the tip of the leaves first but does anyone know if you have added to much nutrients to the water does this affect the root zone and can it lead to root rot? peace out, stay chilled :)