m0useanswered grow question 2 years ago The best way to feed autos with liquid nutrients I find is like this:
Mix up lets say 1Gal of feed with the ratios they are suggesting cut in half, so as a simple example,[ 1ml/l : 3ml/l : 2ml/l ] of [ grow : bloom : micro ], I don't think fox farm has micro but you get the point, keep the ratios the same between the different nutrients your using then just add more water to dilute it down to the EC range your looking for, after that PH adjust the solution from there.
If your using CaMg it will use up almost half of your allocated EC budget as its so high in conductivity.
Eg if your aiming for a EC of 1.0 do not be surprised if when adding CaMg it jumps from 0 to 0.4
This web page is a solid reference point for auto feedings.
https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/
Its not 100% and something may need a small adjustment but its good frame work to build off of.
I'm a little rusty on the order of adding but I think it goes silicon "if useing it" + stir really well and let it chill, then CaMg + stir, Then the rest. Last part is PH adjust.
Best Of Luck!