I'd stick with about 6.2 for coco. Your nutes are good. When you say 'tank water' where does it come from? Is it well, city, rain, or what? If it has a base ppm under 200, you need to add calmag. Coco grows need more Ca than other grows. Canna Coco is good but if you are running distilled or rain water, you have to add calmag anyway.
stinkyattic Reviewed by stinkyattic on . 1st GROW PLEASE HELP THEY LOOK SICK ok i got the list from the top of the page and will fill out as much as i can. i will try by explaining what i have allready don in case that has contributed to my problems. the plants were started from seed in seedling mix and then transplanted into coco the bushier one has been a bit retarded about seince it struck it's 2nd node (it started growing shoots everywhere from the side of the main stem) all was good until they were in the coco for about 2 weeks and thats when the leaves started Rating: 5