Interpolate a grower’s measured dry-recipe concentration and scale a new batch.
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Interpolate a grower’s measured dry-recipe concentration and scale a new batch.
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Measure EC at two known g/L concentrations of the same dry recipe, water and temperature. Interpolate only between those points, then multiply by final litres. The relation is locally approximate. Presets illustrate arithmetic and are not fertilizer recommendations.
f = (ECₜ−EC₁)/(EC₂−EC₁); c = c₁+f(c₂−c₁); m = cV; 0 ≤ f ≤ 1
Recipe mass: 75 g Interpolation estimate: mix, measure EC and adjust; no nutrient-balance guarantee.
f = (ECₜ−EC₁)/(EC₂−EC₁); c = c₁+f(c₂−c₁); m = cV; 0 ≤ f ≤ 1
Recipe mass: 75 g Interpolation estimate: mix, measure EC and adjust; no nutrient-balance guarantee.
No. EC cannot identify individual nutrients. Keep component ratios and dissolution instructions unchanged; do not combine incompatible concentrates. Prepare a new batch, then measure and adjust; this is not a top-up dose.
Calculations run on your device. Form inputs are not sent to a server.
The initial choice follows your browser region. Your choice is remembered on this device. Gallons are US gallons. Switching units keeps your numbers unchanged and interprets them in the new unit.
Numbers stay unchanged. Check the new unit and enter the intended measurement, or select an example for that system.
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature.
Enter a numerical value for this quantity. Use the unit shown beside this field. g/L / oz/US gal
Minimum: 0 · Maximum: 1000 g/L
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature.
Enter a numerical value for this quantity. Use the unit shown beside this field. g/L / oz/US gal
Minimum: 0 · Maximum: 1000 g/L
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature.
Enter a numerical value for this quantity. Use the unit shown beside this field. mS/cm
Minimum: 0 · Maximum: 100 mS/cm
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature.
Enter a numerical value for this quantity. Use the unit shown beside this field. mS/cm
Minimum: 0 · Maximum: 100 mS/cm
Enter a numerical value for this quantity. Use the unit shown beside this field. mS/cm
Minimum: 0 · Maximum: 100 mS/cm
Interpolate only between those points, then multiply by final litres.
Enter a numerical value for this quantity. Use the unit shown beside this field. L / US gal
Minimum: 0.001 · Maximum: 10000000 L
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature. Interpolate only between those points, then multiply by final litres. The relation is locally approximate. Presets illustrate arithmetic and are not fertilizer recommendations.
Calculated from your entries using the method below.
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature.
Calculated from your entries using the method below.
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature.
Calculated from your entries using the method below.
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature. Interpolate only between those points, then multiply by final litres. The relation is locally approximate. Presets illustrate arithmetic and are not fertilizer recommendations.
Calculated from your entries using the method below.
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature. Interpolate only between those points, then multiply by final litres. The relation is locally approximate. Presets illustrate arithmetic and are not fertilizer recommendations.
Calculated from your entries using the method below.
Measure EC at two known g/L concentrations of the same dry recipe, water and temperature. Interpolate only between those points, then multiply by final litres. The relation is locally approximate. Presets illustrate arithmetic and are not fertilizer recommendations.
Calculated from your entries using the method below.
Mistake: Changing units and assuming the entered numbers were converted.
Fix: Numbers stay unchanged. Check the new unit and enter the intended measurement, or select an example for that system.
Mistake: Treating a result as valid outside the described scope.
Fix: No. EC cannot identify individual nutrients. Keep component ratios and dissolution instructions unchanged; do not combine incompatible concentrates. Prepare a new batch, then measure and adjust; this is not a top-up dose.
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