Did your growth ever pick up??
I also grow in coco, amended w/ GG, worm castings, and several other dry organics…..I’m constantly tinkering with my recipe.
What I’ve seen is growing in coco is like hydro in slow motion. My plants would like to be watered daily, but I’m doing so every other day.
It’s a fine line between watering enough to keep things really moist and a little too much causing your precious amendments to be leeched out of the medium.
My advice would be to water very very slowly. I’ll use a spray bottle to soak the top surface followed by slowly working outside to inside with my watering can.
I’ve found that it takes a few minutes for the water to make its way through the medium.
I try to water to the point of runoff but just short of having any. Too many times I’ve thought the medium was soaked and wasn’t gonna have any runoff, only to come back 15min later and see it dripping….so learn what your plant will take and don’t go over.
I don’t get super fast growth in veg but it’s steady. I do train my plants aggressively and have thought they’d grow faster if I didn’t bend them so much.
The main thing though, is I hardly ever have any signs of problems.
Lastly, I’ll use gypsum (sometimes) and tap water……I also PH it to 6.0. If I don’t mix in any gypsum powder, I do give a small amount of cal mag from week 2 of veg through week 5-6 of flower.
I’d love to hear if anyone else’s follows the organic coco method.