Stable Alkalinity. Healthy Corals. Automated.
Manual testing can’t catch rapid alkalinity swings. The KH Director® monitors and controls KH levels continuously using direct titration—the same method professional laboratories rely on for accuracy.
Choose standalone operation with integrated dosing, or integrate into your ProfiLux ecosystem for synchronized control of all reef parameters.
System Options:
KH Director Standalone (works with GHL Doser 2.x / 3.x)
KH Director EXT (for ProfiLux® 3 or 4 + Doser 2.x / 3.x EXT)
KH Director Sets
KH Director Accessories 12 Products
ION/KH Director water filter
$14.90Filter for filtering the sample water.
KH Reference 1000 mL
$27.90KH Reference Solution, 7.5°dkH.
Flex-PVC-Tube 6/4, 5 m
$14.90Tube of Flex-PVC, ID = 4.0 mm, OD = 6.0 mm, l = 5 m
KH Director Reagent Set
$114.90Highly precise and stabilized reagent solution for KH Director, Flex-PVC-tube for reagent 70 cm.
Silicone-Tube 6/4, 5 m
$14.90Tube of Silicone, ID = 4.0 mm, OD = 6.0 mm, l = 5 m
KH Director pH-electrode
$97.90pH electrode specially manufactured for the KH Director.
Replacement tube-fitting for ION/KH Director
$10.90Base part, 2 x clamping ring, 2 x knurled nut
Replacement pH-sensor fitting for KH Director, Version 2
$7.90Cap with grooves
Replacement Y-splitter cable for ION/KH Director
$11.90Replacement Y-distributor cable for ION/KH Director to split one power source to up to 2 devices.
Replacement pH-sensor fitting for KH Director, Version 1
$7.90Cap without grooves
KH Director Reagent
Price range: $27.90 through $42.90Highly exact and stabilized reagent solution for the KH Director.
KHD & GHL Doser 2.2 EXT Set
$913.90Measurement device for the determination of alkalinity, with pH-electrode, calibration fluids pH4 and pH7, reagent 500 mL, silicone tube 5 m, EXT dosing pump unit, 4 pumps, stepper motors, with power supply and 2x PAB-cable 50 cm.
KHD & GHL Doser 2.2 SA Set
$965.90Measurement device for the determination of alkalinity, with pH-electrode, calibration fluids pH4 and pH7, reagent 500 mL, silicone tube 5 m, EXT dosing pump unit, 4 pumps, stepper motors, with power supply and 2x PAB-cable 50 cm.
PAB-Cable
Price range: $13.90 through $47.902x RJ45
KH Director
$577.90Measurement device for the determination of alkalinity, with pH-electrode, calibration fluids pH4 and pH7, reagent 500 mL, silicone tube 5 m
KHD & GHL Doser 3 EXT Bundle
From: Original price was: $1092.80.$1051.61Current price is: $1051.61.Complete bundle for automated alkalinity (KH) measurement and dosing with a price advantage compared to buying separately.
Not a standalone solution – requires a compatible GHL master device.
KHD & GHL Doser 3 SA Bundle
From: Original price was: $1144.80.$1099.45Current price is: $1099.45.Complete standalone bundle for automated alkalinity (KH) measurement and dosing with a price advantage compared to buying separately.
No additional controller required.
KH Director IL (12HU)
$724.90Industrial Line slide-in unit (12HU) for automated alkalinity (KH) measurement and control. Uses precision pH-based titration for accurate, repeatable results — up to 24 measurements per day. Automatically adjusts dosing quantities to maintain stable KH levels. Works with marine and freshwater aquariums. Connects via PAB (ProfiLux Aquatic Bus).