Hey Pedro 6.5 is a little high for coco, you need to be in the 5.6- 5.9 ph range, most try to stay about 5.8 and coco really need watered daily with nutes, start at about 1/4 dose and water till you get run off. Try that a few days and see how that does, do you have any calmag, you will need it. Dont know anything about formulex![]()