What nutes?? Having issues with Coco / clay peb mix can anyone help please

Hi there im wondering if anyone can help !? im using a 20% coco and 80% clay pebs mix may be more like 30 / 70 but however im having some what look like nutrient deficiencys and was wondering if anyone has done this sort of mix before and also could the coco A+B nutes be the problem? I was told by the hydro shop it should be ok as i had a lot of coco nutes left to use, here is my original post with my set up https://www.rollitup.org/marijuana-plant-problems/502316-plant-problem-can-anyone-help.html Ive since changed the water and nutes yesterday leaving out the hygrozme and added microbial any help would be greatfull

Why in the name of allah would you mix 20% coco with clay pebbles? And you should be using the coco nutes but without the pebbles, also you must soak the bebbles in ph'd water before using them, or you will most likely get the deficiencies you are describing.

I can't see the clay pebbles and coco mix sense either.... Explain your logic

my logic is the fact i wanted to go pebs but had forked out loads on numerous things and didnt have spare funds at the time to be buying more nutrients and had almost full bottles od coco A+b left from a recent one in coco and wanted to do pebs, the guy in hydro shop said it was possible to mix them as i have and should be fine that way save wasting nutes would use them up and then i would invest again in hydro nutes and do pebs only after this one. The pebs were washed clean and ph water too.