I just did some math to make sure I didn’t stuff up my calculations.
I actually work in ltr’s, but worked it back to gals.
My soup @ 480ppm was
GH Trio 2ml per 10 ltr - 10ltr is 2.63gal- 2ml/2.63gal=.73ml per gal.
Calimagic 7.5ml per 10ltr-7.5ml/2.63gal =2.85ml per gal
Rhizotonic 40ml per 10 ltr- 40ml/2.63gal = 15.21ml per gal
Mycorrhizae 1/4 scoop per 10 ltr-
My water started at 90ppm. My pen is a tds pen so I believe that is the 700 scale.
This was a pic of the reading approx 24 hrs after the new soup mix so it had dropped a bit.
View attachment 4337910
Last night I mixed up a new soup mix and bumped the gh trio up to 2.28 ml per gal and the calimagic & rhizotonic at the same as previous but didn’t add any mycorrhizae and my ppm was 590. The mycorrhizae must bump the ppm up more than I thought. I think I have done my calculations correct with converting from ltr to gal. My cheap pen could be incorrect as well.