Targets
EC: 2.1
pH: 6.2
Adjusting EC
| Nutrient | Grams per ~.3 EC rise | Notes |
| Lettuce Formula | 80 | |
| Magnesium Sulfate | 50 | |
| Magnesium Nitrate | 30 | Offsets Mg absorption from Hydroton pellets |
| Calcium Nitrate | 80 |
Adjusting pH
For 110-gallon systems: Per 1.0 pH drop, add 275 mL of a 1:15 phosphoric acid dilution (this is the strength of the pre-made dilution)
To make: 1 cup of 70% Phosphoric acid to 15 cups water = 1 gallon of dilution