I guess I'm in one too many threads I originally thought you were doing soil with some cocoa in it which to me is odd. I grow in general hydroponics compressed Coco bales and I used the GH Trio for my feed.
In my experience there's nothing you can't solve with correct pH correct feed level and enough runoff. Are you getting 15 to 20% runoff each and every time you feed? And making sure that the plants are not soaking that run off back up into the pot?
I've had a dry start or two with gh Coco. It's kind of a fine line if you go in with your Coco too wet with seedlings they're slow to start and get them too dry and you can get kind of what you're looking at. But, there's no reason you couldn't mix up your scheduled nutrient mix and pour it through that pot till you got 70 or 80% runoff. That would clear out any salt build-up you have if you never got it properly hydrated that would get it nice and wet all the way through and help flush out anything that was left over in the manufacturing process, probably solve your problem right there.
If you want to see a bad start in Coco turn around fast with enough nutrients runoff and pH correct just check out my current fast buds grow.
In my experience there's nothing you can't solve with correct pH correct feed level and enough runoff. Are you getting 15 to 20% runoff each and every time you feed? And making sure that the plants are not soaking that run off back up into the pot?
I've had a dry start or two with gh Coco. It's kind of a fine line if you go in with your Coco too wet with seedlings they're slow to start and get them too dry and you can get kind of what you're looking at. But, there's no reason you couldn't mix up your scheduled nutrient mix and pour it through that pot till you got 70 or 80% runoff. That would clear out any salt build-up you have if you never got it properly hydrated that would get it nice and wet all the way through and help flush out anything that was left over in the manufacturing process, probably solve your problem right there.
If you want to see a bad start in Coco turn around fast with enough nutrients runoff and pH correct just check out my current fast buds grow.
your RO water is coming out at 8+pH? That's a bad sign mate, the membrane might be toast,.. what's the ppm on the RO? pH readings on truly pure RO or DI water can be difficult to get (has to do with the way meters works and chemistry).. better measure is ppm of the RO water, which should be well under 10ppm, more like 2-5ppm,... What I chasing here is where the source of alkalinity is coming from, to make your run-off from the pot higher pH than going in! nutes acidify, BTW,...
