Quote Originally Posted by colour
No ardent coco'ers?
There's a few of us.

Coco runoff is very different from soil, as you have seen.

Runoff readings are meaningless for PH. (Actully, that's a good thing, gives you a buffer.)
Runoff ppm is also "mis-leading"
"Flushing" coco is a bad idea.
Again, it is not soil.
Flushed coco is too clean and will suck elements out of your plants with osmotic pressure.
OK, there's just too much information to stuff into one post.

Do a search for coco and read yerself blind.


Do have one important tip though.
Coco is a cation exchange medium.
It needs CalMag with the first watering, but if you add Calmag to every watering, Phosphorus gets locked out, and they look like dis:
[attachment=o245563]

Very attractive, very potent, very tasty, but not healthy.

Aloha,
Weezard
Weezard Reviewed by Weezard on . Bizarre runoff in coco...?? I use a 50/50 mix of Roots Organic coir and hydroton. I just tested the runoff and I'm getting 6.5 pH and 1500+ ppm. I feed every morning with AN 3 part & CalMag. pH @ 5.6, 900 ppm. What is causing the intense runoff? Rating: 5