I did read the thread you posted. Well to be honest just the first long post by Aquaman about watering in coco :)
Will take closer look later on its 35 pages.
My medium is not so Coco.
There is
30-40% coco
30% organic soil
10% peat moss
the rest is perlite and worm shit
I dug the soil on one of the plants to check how roots are growing.
3 days after watering 2 top inch were dry then everything below still wet humid but not dump. I noticed roots growing down the pot where the medium seeams optimal for them.
So I water them every 5 days usually together with feeding exactly as on schedule below.
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