GF Mandarine XL in coco coir

the roots are sinking sufficiently, the gogro system is feeding them properly, so I started the Sensi Coco grow fertilizer through the tank. I had put 1ml/l at the beginning of the week, but the leaves were turning slightly yellow; I increased it by 50% midweek, it seems to be enough for the moment. I intend to keep a light hand: I've been dealing with nutrient burns at... almost every session in coco. 😁