Monitor, maintain, and control Alkalinity with ease

If you’re looking to achieve exceptional coral growing conditions, Alkalinity testing is a must!
Keep it steady with the new GHL KH Director®.

Get a first-hand look at the KH Director®, shown first at MACNA New Orleans!

Fully control and automate Alkalinity supplementation like a PRO! Lab grade quality and precision, only the best for your reef.



  • Fully automated control of Alkalinity/Carbonate hardness
  • Lab grade quality and precision
  • 0.1°dKH measurement value accuracy
  • Measurement value data logging
  • Compatible with ProfiLux 3, 4, and GHL Doser
  • Data viewable on ProfiLux display, ProfiLux Touch, or myGHL; additional external display unit optional
    LED status display, myGHL cloud accessible (via GHL Doser or ProfiLux 3 or 4)

The KH Director® is designed to work in conjunction with a GHL Doser 2 Standalone or a ProfiLux Aquarium Controller 3 or 4 with a Doser 2 Slave for operation. The 2 inlets and 1 outlet of the KHD connect to 3 dosing pumps on the Doser 2 (2.1). These 3 pumps are then responsible for accurately transferring fluid to and from the KHD.

Read all details about the new KH Director® here.

Prices, pre-orders and shipping date

Pre-orders are welcome from now on – Special KHD pre-order discount of 10% valid until November 30, 2017

Regular prices without pre-order discount, net, without tax:

  • KH Director
    Europe: 378€
    USA: USD 449.90
  • Set: KHD + GHL Doser 2.1 Slave 4 pumps
    Europe: 672.20€
    USA: USD 799.90
  • Set: KHD + GHL Doser 2.1 Standalone 4 pumps
    Europe: 714.20€
    USA: USD 849.90
  • Reagent 1000ml (~3 months@4 tests/day)
    Europe: 26.65€
    USA: USD 32.90

Shipments are started from 12/11/2017, orders will be shipped in the order they are received. Due to the very high demand we expect that it takes several weeks until all pre-orders can be processed.

You will not find the new products in the GHL webshop yet, if you want to order the KHD directly from GHL the contact us via email.