I will never use MG soil again, not sure about the organic kind but the reg kind has little balls of liquit fertilizer that will nute burn your plants
Organic is a totally different animal and I have actually used MG Blue Bag successfully to grow cannabis when diluted a bit with coir!
MG Organic may not be Ocean forest but is still much cheaper even after you amend it! Would also make a good base for a "super soil". It already has some
yucca and coir fiber in it but I mix it 3 parts to one part coir. You could also add guano, bone meal, crab meal, etc to bring it up to a standard more like Ocean Forest. Ocean forest can burn anyway - I have used it mixed 2pt to one pt coir with fantastic results, but it is still expensive!
I usually don't even go to that effort - just the 3:1 mix of MG Organic with coir, myco., bacteria, humic acid, azomite and feed with fish emulsion in veg and Big Bloom in flower. I have produced the best bud I have ever smoked (an Agent Orange cross - see image [you may have to dl and zoom...]) with this method. I have smoked a lot of bud over the last couple decades (1st time - Grasshopper, A"dam, 1996, Purple Haze, age 14, with dad) and have been an MMJ patient for 2 years.
KISS - Keep It Simple, Sherlock. And don't forget, organic rules, hydro drools (because of the harshness).
As a little FYI, the "little balls" in MG Blue Bag are actually silica gel, for water retention. You can't actually see the extended release nutes. You may be tempted to think it is like an "extended release pill" but the nutes are merely "extended release" by virtue of their molecular structure and how they react and release soluble nutes over time.
I might also add, I had a J27 female which lived for over a year and flowered three times, the last time producing seed so this rare breed could live on, crossed with another Cali rarity, Odyssey. She grew in a 5 gal bucket of MG Blue Bag and the only thing I ever did in a year is occasionally give her some Big Bloom in flower! I culled her after the seed run - the buds were getting strange anyway. She probably could've flowered a couple more times but you wouldn't like the buds she produced. After a year, the latest sets of fan leaves were still very dark green - indicating excess nitrogen. The MG BB was still fertilizing strong after a year.