Inputs
7 parameters · live recalculation on every change
PH
3.5pH
7pH default
8.5pH
PH
3.5pH
6pH default
8.5pH
L
5L
200L default
5000L
ⓘ Basis of calculation How it’s computed
1
Enter current and target pH — the green band for most crops is 5.5–6.5, lettuce rides ~5.8, tomatoes ~6.0.
2
Set the reservoir volume; every dose in this tool scales linearly with it.
3
Know your water: enter the alkalinity in ppm CaCO₃ — RO sits ~0–20, tap 40–120, well water can exceed 150.
4
The engine runs carbonate speciation and buffer capacity from that alkalinity, so a high-alk feed demands visibly more acid.
5
Read the acid or base dose in mL, add in 1:10-diluted increments, distribute around the stilling zone.
6
Retest after 30 minutes and re-run — buffer chemistry keeps the real dose within a few percent of the first script.
Live output
Acid Dose
5
mL
Acid Dose
pH 7.00 → 6.00 · Optimal band 5.5–6.5 · big shift: drop in 0.25 steps · alkalinity 60 ppm CaCO₃
Base Dose
—
mL
Alkalinity After Shift
51
ppm CaCO₃
Carbonate (CO₃²⁻)
0
ppm
Bicarbonate (HCO₃⁻)
49
ppm
Buffer Capacity
0.46
mmol/L·pH
pH Stability
Moderate — fertile water, retest daily · acid needed: 5 mL
Mode
standard
Active profile