Conductivity Electrode, Platinum In stock
2 × $169.90
Dosing Pump Head for GHL Doser 2.1 / 2.2 In stock
1 × $37.90
ION / KH Director Water Filter In stock
2 × $13.90
Silicone Tube 6/4, 16.4 feet In stock
1 × $13.90
KH Director pH-electrode In stock
2 × $90.90Subtotal: $601.20
From dedicated aquarists to leading research teams and aquaculture professionals – GHL delivers precision control, dosing, lighting, and monitoring solutions that set the industry benchmark.
Engineered and made in Germany for those who demand reliability, innovation, and long-term performance.
Experience the difference – enjoy your passion.
Your GHL Team
Shipping from our USA warehouse starts 02/15/2026
Pre-order promotion: Save until Jan. 04, 2026!
A dedicated 24/7 touchscreen display for your ProfiLux IL.
Provides instant access to key measurements, manual controls, and system actions – no phone or app needed.
Designed for installation inside GHL Industrial Line enclosures.
In stock
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.
In stock
Complete standalone bundle for automated alkalinity (KH) measurement and dosing with a price advantage compared to buying separately.
No additional controller required.
In stock
Complete bundle for automated multi-ion measurement and dosing with a price advantage compared to buying separately.
Not a standalone solution – requires a compatible GHL master device.
In stock
Complete standalone bundle for automated multi-ion measurement and dosing with a price advantage compared to buying separately.
No additional controller required.
In stock
Pre-order promotion: Save until Jan. 04, 2026!
Complete ProfiLux 4e control with added convenience: This bundle combines the ProfiLux 4e Starter-Set 6E with the GHL Control Pad, giving you a powerful aquarium controller plus an always-on touchscreen display for quick access to essential functions. Save compared to purchasing individually.
In stock
Pre-order promotion: Save until Jan. 04, 2026!
Complete ProfiLux 4 control with added convenience: This bundle combines the ProfiLux 4 Mega-Set 6E with the GHL Control Pad, giving you a powerful aquarium controller plus an always-on touchscreen display for quick access to essential functions. Save compared to purchasing individually.
Shipping from our USA warehouse starts 02/15/2026
Pre-order promotion: Save until Jan. 04, 2026!
A dedicated 24/7 touchscreen display for your ProfiLux 4(e).
Provides instant access to key measurements, manual controls, and system actions — no phone or app needed.
Flexible wall or flush-mount installation.
Interested in selling our products? Please contact us!
If you are from North America: sales@ghlusa.com
Other regions: sales@ghl-kl.de
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.
In stock
Wishlist
In stock
ION and KH Director filter for filtering the sample water.
In stock
Replacement rollers, roller holders, and blue covers for GHL Doser 2.1
In stock
1000mL bottle of KH Director reagent fluid
In stock
Level sensor fastener for level sensor holder base unit
8mm slot, suitable for our Floater, amongst others
In stock
Splitter for 2 level sensors
Mini-DIN, 1 plug, 2 sockets
In stock
Base unit level sensor holder
Plexiglass stick with magnetic mount
In stock
For GHL Doser 2, 2.1, Dosing Unit
In stock
pH-electrode, BNC, 3m cable
In stock
Calibration fluid pH7.0
50mL
In stock
Wishlist
In stock
Level sensor fastener angled for level sensor holder base unit
12mm slot, suitable for our optical level sensor, amongst others
In stock
Pump head for GHL Doser 2.1 and 2.2.
In stock
Digital powerbar for PAB, 6 sockets switchable, switch with integrated fuse.
In stock
Leakage sensor with 80 spring-loaded contacts, incl. 1.5 m cable
In stock
In stock
Calibration fluid pH4.0
50mL
In stock
Can be used for:
In stock
For liquid container up to 94 mm diameter incl. stirrer stick and connection cable for GHL Doser 2
In stock
Holder for 1 sensor, magnetic fixing, max. glass size 12 mm
In stock
Calibration fluid pH9,0
50mL
In stock
Holder for 4 sensors, magnetic fixing, max. glass thickness 15 mm
In stock
KH Director Reagent Set: 3 x 1000 ml (3 x 33,814 fl oz) + reagent tube 70 cm, 0.28″
In stock
Can be used for:
In stock
Calibration fluid conductivity 50mS/cm
50mL
In stock
Wishlist
In stock
Level sensor, Floater
Mini-DIN, 3 m cable
In stock
Saltwater model, 6 cluster.
In stock
High-performance aquarium fan, silent, ball bearings and brushless motors.
In stock
Wishlist
In stock
Conductivity electrode platinum, BNC, 3m cable, for fresh water + salt water
