I mix in one gal containers. Cal Mag, Micro, Grow and then the Fox Farms bloom ( bat shit and more ). I add each one individually, mix it and then on the same with the others. This grow I’m only doing 1 plant. Original Glue Fem.  This grow I am using FFOF which I use 75 percent of time. So I will not add anything but Cal Mag and phd water for the first 5-6 weeks.  Supposedly there’s all what’s needed in the FFOF for most of the grow.  I found one bag of FFOF in town. I called first to verify they had it. Response was 26 bags that are 1.5 cu ft.  Got there they had 1.  Said inventory was off and they are having a hard time buying another pallet.  $19.95.   Even checked Walmart. Not in stock. Most prices online I’m seeing is $28-$39 per 1.5.    I imagine I bought the last bag of spring stock.