These powders are very easy use although the recommended amounts from Greenhouse feeding are strong. I mixed it as recommended but diluted the mixture by at least 50% to bring the PPMs down to a lighter dose.
This saved me from a magnesium deficiency getting out of hand on a very hungry plant grown in a light soil. It was available on Amazon for next day delivery. Any brand would do.
Harvested earlier than I wanted due to a deficiency caused by cold roots. The smoke has a cerebral and creative buzz with a pleasant taste so far and it’s nowhere near cured. Not that strong so I’ll make some bubble hash from it.