Inputs
9 parameters · live recalculation on every change
MS/CM
0.1mS/cm
1.8mS/cm default
4mS/cm
PH
3.5pH
6pH default
8.5pH
PH
3.5pH
5.8pH default
8.5pH
L
5L
200L default
5000L
ⓘ Basis of calculation How it’s computed
1
Enter the meter reading as EC in mS/cm — the only number you should actually trust from a conductivity pen.
2
Select the TDS scale printed on your meter: 500 NaCl, 640 KCl or 700 (USA 442). The hub converts all three every time.
3
Read PPM on your chosen scale plus CF and µS/cm simultaneously so any two pieces of gear can be reconciled.
4
Compare any two nutrient formulas element-by-element at the same EC to see where one pulls ahead.
5
For pH, enter current and target pH plus tank volume; the hub suggests the pH Down / pH Up dose for the medium.
6
Retest 30 minutes after any pH or feed change — the dose is a starting point, never the final word.
Live output
PPM (selected scale)
1260
ppm
PPM (selected scale)
1.80 mS/cm · Flower range 1.8–2.6 mS
PPM 500
900
ppm
PPM 640
1152
ppm
PPM 700
1260
ppm
Conductivity
1800
µS/cm
EC Factor (CF)
18
CF
pH Dosing
—
mL
Mode
convert
Active profile