Hmm u need a lot. First what way to explain? Soil or hydro both use different numbers.I don't know what do you do in soil but in hydro in a 55 gallon reservoir from general hydroponics flora series my mixes 24 gallons I mix with each day they tell you to do the magic number is times it by 24 and that's for 55 gallon reservoir doesn't matter how many plants or whatever as long as you are mixing your nutrients according to the schedule that they provide for you,you have to figure out the right number so you do not burn your plans and like I said this is hydroponics ebb and grow 5 gallon pots with a top feed on the g.h. flora series resirculating schedule. Wow I repeat this too much lol maybe one day someone will do it.