I will save u lots of trial and error, although the lessons learned on mistakes tend to stick.
I run an organic grow and have done so for some time.
I’ve mixed every organic offering out there in more combinations than I can count….and used a bunch of different mediums. Ocean Forest, buffered coco, BioCoco, CocoLoco, KokoBop and Happy Frog, just to name the ones that I remember. I’ve always ended up with pretty good harvests.
Over the years that I’ve tweeked this and changed that, I’ve come to a conclusion. The actual plant needs less than I ever thought. Don’t get me wrong, it must have the proper nutrients at the correct times, or it won’t thrive.
But there is a lot of duplication and overlap in the “feeding schedules” of the manufacturers.
As for which organic products to use: there are a bunch, but I’ve always used Gaia Green. I’ll use the 4-4-4 growth formula for veg and the the first half of flower…..and the 2-8-4 power bloom as flowering gets going. But there are several others that I’m sure would offer the same results. Fox Farms makes their own dry organics and I wouldn’t hesitate to use them.
The only other ingredients would be worm castings and myco (or dynamyco/Mykos) . And I always add some additional perlite or rice hulls to the mix.
Depending on the medium and how heavily it’s amended straight out of the bag, I’ll mix in the Gaia Green 4-4-4, worm castings,& myco ahead of time…..although it’s not necessary.
A heavily amended one like Ocean Forest or KokoBop, I’ll use about half of the amount suggested on the bag.
A lightly amended or totally inert, like Happy Frog or Fox Farms 70/30 coco, I’ll go with the full dose, which is 3 tablespoons per gallon of medium.
Then depending on how long your veg takes, you’ll top dress a couple times as the grow progresses and finishes.
Note that the N levels should not be lowered until flower is well under way.
I’ll also give some sort of tea as a microbial catalyst every 3rd or 4th watering throughout the entire grow. I use ReCharge mostly. But u can bubble up your own or there are other brands….Stump Tea is one I’ve used.
As for the PH and the need to adjust your water…..it may not be needed, but I do it anyway. My tap is around 8.3-8.4 and I bring it down to 6.0-6.8.
The process of watering is where a lot of growers miss the mark.
With this grow, you DO NOT want a lot of runoff. A few drops lets me know I’ve saturated the entire medium but anymore than that means I’m leaching out my nutrients.
The biggest piece of advice I can give U, is to water slowly. Like really painstakingly slow.
Go around the edge first and work to the middle.
Wait at least 5–10 minutes between loops.
It’s a pain in the @ss but will make a difference.
I use a wetting agent like coco wet or “rain” by roots organic.
If you’re in a hurry, don’t water unless the plant is bone dry and droopy.
For the record, I only grow 3 plants at a time in a 2.5’ x 6’ space. I have 2 HLG lights totaling 470W and I’ll usually get between 14-18oz per grow. And my plants are usually 24” tall or shorter, but spread and and lollipopped, so it’s a sea of tops with zero loose larfy buds.
Good luck and there are tons of great folks on this site that will help u anytime….