Coco Coir Medium

M

Mag11

Member
I mixed a medium batch that is 7 parts coco coir (double buffered, CaliMag), 2 parts perlite, and 2 parts worm castings. I did a slurry test and the pH=6.7 PPM=779 EC=1.65 TDS=968. I'd like to lower these numbers across the board before I plant into this mix. Does anybody have any idea how to do that. Any help would be much appreciated.
 
Rurumo

Rurumo

Well-Known Member
Typically you mix up a batch of a complete nutrient solution (like Jack's A/B or Maxibloom) to .8 or 1 ec, then flush the media out with it with plenty of runoff. That will remove excess salts and prepare the coco with the perfect concentration of nutrients. The added worm castings may be responsible for your high EC, though it could be the coco-if you didn't flush it, some brands are still starting with a high EC.
 
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