Orca is expensive, but it's one of the best. IMO!! I use several.
MaKayla, you only need to use it a few times, especially when transplanting. Must put in on the roots before you drop it in soil in the bigger container!!! Also, you can use it in your feed/water after roots have been established. It will make root bound plants bounce back fast!!! But be careful, PH adjusters kill myco, so go easy on the ph up and down. Or use organic ph up or down and not worry about it. To keep them alive, you need a good carb source, like molasses or carboload. Lots to learn, but Myco grow bigger, better plants!!