The Key to Success in Aquariums
Enhance safety, precision, and success in aquatics with GHL’s professional-grade technology.
From passionate aquarium hobbyists to professionals and researchers in breeding and marine science—our premium, in Germany engineered and manufactured products deliver unmatched performance and reliability.
Experience the difference – enjoy your passion to the fullest!
For dealers
Interested in selling our products? Please contact us!
If you are from North America: sales@ghlusa.com
Other regions: sales@ghl-kl.de
Downloads
Are you looking for documents, manuals, software, or firmware updates?
If so, please take a look at our download section.

Free shipping on all orders over $175.
Do you have questions or need technical support?
We’re here to help.
Please visit our dedicated GHL support page
at www.aquariumcomputer.com.

Looking to order from CANADA?
Submit your order and mailing address
via email to info@ghlusa.com.
Cooling 2 Products
Fan Gear 1 Product
Gift Cards 4 Products
Industrial Line 17 Products
Measuring/Controlling 106 Products
Open box / Refurbs 2 Products
Pumps 10 Products
Lighting 41 Products
Dosing 40 Products
Magnetic Stirrer 1 Product
Replacement Parts 21 Products
Dosing Pump Tube
$9.90In stock
WishlistION / KH Director Water Filter
$12.90In stock
ION and KH Director filter for filtering the sample water.
Doser 2.1 / 2.2 pumps maintenance set
$18.90In stock
Replacement rollers, roller holders, and blue covers for GHL Doser 2.1
Level Sensor Fastener
$8.90In stock
PL-LF-S8
Level sensor fastener for level sensor holder base unit
8mm slot, suitable for our Floater, amongst others
KH Director Reagent 1000mL
$38.90In stock
1000mL bottle of KH Director reagent fluid
Splitter Cable for Level Sensors
$12.90In stock
PL-LY
Splitter for 2 level sensors
Mini-DIN, 1 plug, 2 sockets
PAB-Cable
Price range: $11.90 through $42.90In stock
Accessory for connecting PAB devices.
Level Sensor Holder Base Unit
$24.90In stock
PL-LF-Base2
Base unit level sensor holder
Plexiglass stick with magnetic mount
Replacement Tube Nozzle for Dosing Pump
$8.90In stock
For GHL Doser 2, 2.1, Dosing Unit
pH Electrode
$79.90In stock
pH-electrode, BNC, 3m cable
Calibration Fluid pH7
$10.90In stock
PL-CalipH7
Calibration fluid pH7.0
50mL
KH Reference Solution 1000mL
$24.90In stock
WishlistDosing Pump Head for GHL Doser 2.1 / 2.2
$35.90In stock
Pump head for GHL Doser 2.1 and 2.2.
Level Sensor Fastener, angled
$9.90In stock
Level sensor fastener angled for level sensor holder base unit
12mm slot, suitable for our optical level sensor, amongst others
Leakage Sensor
$37.90In stock
Leakage sensor with 80 spring-loaded contacts, incl. 1.5 m cable
Powerbar 6E-PAB USA/CND
$269.90In stock
Digital powerbar for PAB, 6 sockets switchable, switch with integrated fuse.
Calibration Fluid pH4
$10.90In stock
PL-CalipH4
Calibration fluid pH4.0
50mL
Magnetic Stirrer
$52.90In stock
For liquid container up to 94 mm diameter incl. stirrer stick and connection cable for GHL Doser 2
Flex-PVC Tube 6/4, 16.4 feet
$11.90In stock
Can be used for:
- ION Director tubing
- KH Director Reagent fluid
- General dosing purposes
Sensorholder 1
$18.90In stock
Holder for 1 sensor, magnetic fixing, max. glass size 12 mm
Sensorholder 4
$43.90In stock
Holder for 4 sensors, magnetic fixing, max. glass thickness 15 mm
Calibration Fluid pH9
$10.90In stock
PL-CalipH9
Calibration fluid pH9,0
50mL
KH Director Reagent Set
$103.90In stock
KH Director Reagent Set: 3 x 1000 ml (3 x 33,814 fl oz) + reagent tube 70 cm, 0.28″
Silicone Tube 6/4, 16.4 feet
$11.90In stock
Can be used for:
- KH Director water sample, waste water and vent line
Calibration Fluid Conductivity 50 mS
$11.90In stock
PL-Cali50mS
Calibration fluid conductivity 50mS/cm
50mL
ION Director Reference Solution
Price range: $19.90 through $31.90In stock
Temperature Sensor Digital
$71.90In stock
WishlistMitras LX 7206 Marine Water
$899.90In stock
Saltwater model, 6 cluster.
Level Sensor, Floater, Version 2
$41.90In stock
Level sensor, Floater
Mini-DIN, 3 m cable
Conductivity Electrode, Platinum
$196.90In stock
Conductivity electrode platinum, BNC, 3m cable, for fresh water + salt water
KH Director pH-electrode
$87.90In stock
WishlistPropeller Breeze 3
Price range: $67.92 through $135.92In stock
High-performance aquarium fan, silent, ball bearings and brushless motors.