I can't say I swear by it.
I can swear by the advanced nutrients microbe trio. (Tarantula, Piranha, and voodoo juice)
But there is a stop sale on tarantula in OR for some reason, so I was directed to GW. I'm using it on my outdoor and indoor. (You can check my journals and see my regimine)
I've had great success with it and will use it until tarantula is available again.
I had to pull 1 of 3 outside. (Directly in the ground) I yanked it up like a carrot. The roots ripping sounded like Velcro underground. That was the main root system underneath....super happy .