So I priced out the cost of my nutrients for a 6 plant grow.
I use about 50g of K,
28.85 / 226g = .25g 50g*.25= $12.50
30g of P
54.47/900 = .06g * 30 = $1.81
Part A 280g
22.27/1000 = 0.023g * 280 = $6.25.
Part B 70g
21.06/1000 = 0.021g * 70 = $1.50
75g Epsom Salt / 25g B-vitamin
23.49/1814= 0.013g * 75 = $1
35.99/226 = 0.16 * 25 = $4
600ml Bio-Ag Ful-power
49.99/3785 = 0.013ml * 600 = $7.92
Gypsum 88g
20/4500 = 0.0044g * 88= $0.40
5g
44.99/226= 0.20g * 5 = $1
5g
30.93/56= 0.55g * 5 = $2.76
8g
13.19/56= 0.235g * 8 = $1.88
2g
22.74/56=0.40g * 2 = $.80
6g
14.36/56=0.26g * 6 = $1.54
PH Up/down Guess $2
So I grow 6 plants for
$45.36 for nutrients.