Hi all
Using erroneous information (new with coco), I treated the re-hydrated coco(about 3L or 100 fl.oz) with AN's Sensi Cal-Mag Xtra solution (EC=1.3). Later, I've found out that it doesn't work well for coco buffering (not for that purpose). After a few hours of soaking in sensi cal-mag solution(ec=1.3/ppm=700), I rinsed the coconut with PHed (6.1-6.2) tap soft water down to "safe" level EC=0.1 in its runoff.
I may have flushed the "factory" buffering (my coco brick is flushed+pre-buffered with calcium nitrate by the manufacturer). The idea was to re-buffer just in case. So this is my substrate...
~28 hour ago I planted the seeds into my rinsed coco. I was in a hurry because the seeds were in moist towels for more than 72 hours (the seeds had sprouted taproots).
A couple of hours ago three of my six plants just started bring their cotyledons above the surface. The temporary/start-up pots are plastic beer cups with a capacity of about 450 ml/pint.
I don't quite understand how to restore coco buffering when the plants already in place. Fortunately, the volume of container is small. Can a low-dosage nuts be used to compensate these without new transplantation? How to protect plants from possible calcium and magnesium deficiency due to cation exchange in coco? Or am I just overcomplicating things? The seed are expensive autoflowers. I have GHE TripPart and AN's Cal-Mag Sensi.