Where am i going wrong?

Growing in coco coir using ionic nutrients is hydroponics. Its not the medium thats giving him problems....trust me on this. There should be plenty of calcium in Ionic nutrient for coco coir. Alot of the problems people have with growing in general is pH and nutrient strength coupled with temperature and humidity. That plays a huge role in what nutrients get taken up. But yes....coco coir with a complete base nutrient fertilizer is most definitely hydroponics. No semi hydro no almost no seperate category...its hydroponics 100%.

Hey OP when you start your next run get on here and let a few seasoned coco growers offer some guiding help, that is if you can wade through the attitude lol. There are some amazing people here and on other forums that would get your GPW up. This being one of the more entertaining forums I might add.