Hey everyone, I'm a beginner grower, using 70/30 buffered coco coir with EHG Bottled Nutrients (its a South African Brand). I have 4 plants that I am growing under a Sunraise 1000. To cut a long story short a couple weeks back my plants began to discolour and due to circumstances out of my control I couldn't fix it until now. I'm now supplementing calmag with my nutrient solution but I don't know what to actually fix. Plz help!