Honestly use hydrobuddy calculator to work out how much add.
Just add your current nutrients as a substance, and it becomes very easy adjust them.
My DIY flower additive consists of potassium sulphate and mono potassium phosphate.
I'm not sure if citrate is considered a organic, if it is I...
Bought a couple of fc-4800's for another 4x8.
But just going to test one in a 4x4 because I already have a hydro setup ready to roll.
Fc-4800 Evo with aeroponics setup.
Going to throw in zkittlez and LA confidential seeds for this run.
Base
A) Potassium nitrate 195.5g
A) Calcium nitrate 263g
B) MPK 88g
B) Magnesium sulphate 203g
B) Potassium sulphate 20g
Flower additive
MPK 44g
Potassium sulphate 39g
5l concentrate, use 10ml per litre of water.
Ec = 1.538 ms/cm.