Hi,
thanks for the comments
i will probably use Rez formula(lucas modified) so that give something like 1,6ml/L Micro and 2,4ml/L Bloom...no grow !!
i know it's not the best nutes for coco, but it's work ! I didn't buy that range for this grow, i was having the bottle so i did choose to use it.
My advice to you after running the recipe 6/9 with tap water and cal/mg for a few years in straight coco dtw. Make sure you rinse the coco very good with a nutrient solution to charge the coco before putting plants into the coco. It may take a few waterings to get the coco to balance out but consistency of your mix and frequency of waterings is key during this time. I feed with every watering just make sure you have plenty of run off atleast 20% and you should have some happy plants.