Horticultural charcoal is different from activated charcoal. So I searched for "forest fire charcoal runoff water contamination".
Science minded readers might want to read a sample link...
Just to be clear I'm not suggesting using charcoal is bad. I've always loved med to add it to organic mixes.
I've never given any thought to the concept of "sweetening" the mix, whatever that means. Actually I've considered it a positive carbon source for the roots to pickup.
Knowing that...
After soaking rinsed charcoal for 24 hours in distilled water the salts rose to 520 ppm. That's a gain of 516ppm above the 4 ppm water. The pH of soak water measures 9.0.
That's what I always assumed. I have used it I mixed for ever. Never seen a problem with it. Now I tested it separately along with other elements I'm making mix with to see how each might effect the result. The high EC of the charcoal is a big surprise.
It may be irrelevant since the mix in pot...
The most famous variety is Sogo Yukidan V3. Normans lists a similar clone that may even be the same clone.
Phal. Sogo Yukidian 'Japan'
(Yukimai x Taisuco Kochdian)
Item #:
MC1120
Thanks everyone. Andy was able to find me a pink skinneri. And I bought two clone hybrids from Normans. Both orders arrived quickly.
Im still interested in other sources if anyone heard of something.
I soaked horticulture charcoal in a K-Lite fértil solution overnight.
K-Lite Solution
290 ppm ...... pH 6.76
The result after soaking is
942 ppm ....... pH 8.46
I would like to know what possibly makes up the added 652 ppm.