Preparation of Hydroponic Media
Grow Stage Nutrients. Makes N:P:K ratio 4:2:6 and nitrate to ammonium ratio 7:1. Mix with "Microelements".
| Compound |
Grams per 15 liters |
| MgSO4 x 7H2O |
15 |
| NH4NO3 |
2 |
| KH2PO4 |
6.2 |
| K2SO4 |
5.4 |
| Cysteine |
0.5 |
| HNO3 |
0.3 |
Bloom Stage Nutrients. Makes N:P:K ratio 3:2:5, and nitrate to ammonium ratio 13:1. Mix with "Microelements".
| Compound |
Grams per 15 liters |
| MgSO4 x 7H2O |
14 |
| NH4NO3 |
1 |
| KH2PO4 |
6.5 |
| K2SO4 |
4 |
| Cysteine |
2 |
| KOH |
0.2 |
Microelements, chelator and calcium nitrate. Add to Grow or Bloom nutrients AFTER dissolving them in 15 L.
| Compound |
Milligrams per 15 liters |
| Ca(NO3)2 |
12,000 |
| Na2B4O7 x 10 H2O |
150 |
| FeCl2 x 4 H2O |
80 |
| ZnCl2 |
15 |
| MnCl2 x 4 H2O |
100 |
| CoCl2 x 6 H2O |
1.5 |
| CuSO4 x 5 H2O |
5 |
| Na2MoO4 x 2 H2O |
1 |
| KI |
1.2 |
| EDTA |
275 |
Accepted concentrations of major elements in hydroponic media:
N, 150 to 1000 ppm (Grow mix: 188; Bloom mix: 160)
P, 50 to 100 ppm (Grow mix: 94; Bloom mix: 99)
K, 100 to 400 ppm (Grow mix: 280; Bloom mix: 253)
S, 200 to 1000 ppm (Grow mix: 205; Bloom mix: 205)
Mg, 50 to 100 ppm (Grow mix: 97; Bloom mix: 91)
Ca, 100 to 500 ppm (Grow mix: 195; Bloom mix: 195)