Dosage and cost is relative to what you are growing, how often you feed, and what other fertilizers and supplements you are using in combination.
I've been using it on seedling greens and onions at 1oz/gal and they are doing just fine.
Will start fertilizing herbs and Brassicas real soon.
Not there yet for weeks yet on Tomatoes, Pepper and such. Plan to play around with the dosages and times between feedings.
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