Home - GHL USA

ProfiLux 4 Controllers

ProfiLux Aquarium Controllers

The Key to Success in Aquariums

ProfiLux 4 Black and White showing an image with the two colors

Discover Innovation for Your Aquarium – Shop GHL® Products Today!

Precision and Passion for Aquatics – Trusted by Experts Worldwide since 1998

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

Featured Products

Mitras LX8X06 — Mitras LX8X06
$1259.90

Shipping from Germany starts 1st of October. Delivery from our US warehouse is expected mid- to late October 2026

Powerful LED pendant luminaire for freshwater and marine aquariums. 132 high-power LEDs plus 3 moonlight LEDs across 6 clusters, 12 dimmable color channels and a dedicated moonlight channel. 250 W power in a compact housing. Flicker-free analog dimming, Auto Power Balancing and TRDT™ reflector optics. Ambient Glow accent lighting, standalone or full ProfiLux integration. Available in three model variants and two housing finishes.

Wishlist

GHL Dosing Container 2100 mL — GHL Dosing Container 2100 mL
$65.90

High-quality 2.0 L dosing container for liquid additives.
Robust design, clear volume markings, and secure lid with 6 mm tubing fitting – ideal for use with GHL Doser systems.

Wishlist

GHL Dosing Container 1100 mL — GHL Dosing Container 1100 mL
$49.90

High-quality 1.0 L dosing container for liquid additives.
Robust design, clear volume markings, and secure lid with 6 mm tubing fitting – ideal for use with GHL Doser systems.

Wishlist

GHL Control Pad IL — GHL Control Pad IL
$272.90

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.

Wishlist

Sale!

KHD & GHL Doser 3 EXT Bundle — KHD & GHL Doser 3 EXT Bundle
From: Original price was: $1060.80.Current price is: $1020.49.

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.

Wishlist

Sale!

KHD & GHL Doser 3 SA Bundle — KHD & GHL Doser 3 SA Bundle
From: Original price was: $1113.80.Current price is: $1069.25.

Complete standalone bundle for automated alkalinity (KH) measurement and dosing with a price advantage compared to buying separately.
No additional controller required.

Wishlist

Sale!

IOND & GHL Doser 3 EXT Bundle — IOND & GHL Doser 3 EXT Bundle
From: Original price was: $1123.80.Current price is: $1033.90.

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.

Wishlist

Sale!

IOND & GHL Doser 3 SA Bundle — IOND & GHL Doser 3 SA Bundle
From: Original price was: $1176.80.Current price is: $1082.66.

Complete standalone bundle for automated multi-ion measurement and dosing with a price advantage compared to buying separately.
No additional controller required.

Wishlist

GHL Control Pad — GHL Control Pad
$249.90

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.

Wishlist

Sale!

GHL Automatic Fish Feeder — GHL Automatic Fish Feeder
Original price was: $97.90.Current price is: $88.11.

Reliable automated feeding for the ProfiLux ecosystem. Programmable cycles plus instant manual feeding via app, GHL Connect, GHL Control Center, ProfiLux panel, or the button on the feeder itself. The drawer principle keeps dry food sealed and clump-free; a built-in IR light barrier warns of low food levels before feeding fails. Up to 4 feeders per ProfiLux 4(e)/4.1(e), or 1 per ProfiLux Mini/Light WiFi (adapter required). Powered directly by the controller — no batteries, no extra power supply.

Wishlist

Popular Categories

Industrial Line — Industrial Line
32 Products

Pumps — Pumps
10 Products

Dosing — Dosing
69 Products

Lighting — Lighting
40 Products

For dealers

Interested in selling our products? Please contact us!

If you are from North America: [email protected]

Other regions: [email protected]

Downloads

Are you looking for documents, manuals, software, or firmware updates?

If so, please take a look at our download section.

Free Shipping

Free shipping on all orders with minimum order value of $100 – US (excl. AK and HI) only.

Help & Support

Do you have questions or need technical support?

We’re here to help.
Please visit our dedicated GHL support page
at www.aquariumcomputer.com.

Shipment to Canada

We ship also to Canada

Showing 1–32 of 234 resultsSorted by popularity

ProfiLux Aquarium Controller — ProfiLux Aquarium Controller
40 Products

Lighting — Lighting
40 Products

Dosing — Dosing
69 Products

KH Director — KH Director
18 Products

ION Director — ION Director
15 Products

Pumps — Pumps
10 Products

Industrial Line — Industrial Line
32 Products

Sensors and Accessories — Sensors and Accessories
40 Products

Powerbars — Powerbars
5 Products

Cables — Cables
11 Products

Power supplies — Power supplies
2 Products

GHL Fan Products — GHL Fan Products
1 Product

Gift Cards — Gift Cards
4 Products

SMS-Module — SMS-Module
2 Products

Replacement Parts — Replacement Parts
22 Products

Open box / Refurbs — Open box / Refurbs
1 Product

Dosing Hose — Dosing Pump Tube
$10.90
Wishlist

ION/KH Director water filter — ION/KH Director water filter
$14.90

Filter for filtering the sample water.

Wishlist

ION Director Reference Solution — ION Director Reference Solution
Price range: $20.90 through $34.90

Highly precise and stabilized reference solution for ION Director

Wishlist

Doser 2.1 / 2.2 pumps maintenance set — Doser 2.1 / 2.2 pumps maintenance set
$19.90

Replacement rollers, roller holders, and blue covers for GHL Doser 2.1

Wishlist

PL-LF-S8 — Level Sensor Fastener
$9.90

PL-LF-S8

Level sensor fastener for level sensor holder base unit
8mm slot, suitable for our Floater, amongst others

Wishlist

PL-LY PL-LY – Splitter Cable for Level Sensors — Splitter Cable for Level Sensors
$13.90

PL-LY

Splitter for 2 level sensors
Mini-DIN, 1 plug, 2 sockets

Wishlist

PL-LF-Base2 — Level Sensor Holder Base Unit
$25.90

PL-LF-Base2

Base unit level sensor holder
Plexiglass stick with magnetic mount

Wishlist

Replacement Hose Nozzle for Dosing Pump — Replacement Tube Nozzle for Dosing Pump
$9.90

For GHL Doser 2, 2.1, Dosing Unit

Wishlist

pH-Electrode — pH Electrode
$79.90

pH-electrode, BNC, 3m cable

Wishlist

KH Reference 1000 mL — KH Reference 1000 mL
$26.90

KH Reference Solution, 7.5°dkH.

Wishlist

PL-LF-S12-angled — Level Sensor Fastener, angled
$10.90

Level sensor fastener angled for level sensor holder base unit
12mm slot, suitable for our optical level sensor, amongst others

Wishlist

Dosing Pump Head for GHL Doser 2.1 / 2.2 — Dosing Pump Head for GHL Doser 2.1 / 2.2
$37.90

Pump head for GHL Doser 2.1 and 2.2.

Wishlist

Flex-PVC-Tube 6/4, 5 m — Flex-PVC-Tube 6/4, 5 m
$14.90

Tube of Flex-PVC, ID = 4.0 mm, OD = 6.0 mm, l = 5 m

Wishlist

Leak Sensor — Leakage Sensor
$39.90

Leakage sensor with 80 spring-loaded contacts, incl. 1.5 m cable

Wishlist

Powerbar 6E-PAB-USA/CND — Powerbar 6E-PAB USA/CND
$279.90

Digital powerbar for PAB, 6 sockets switchable, switch with integrated fuse.

Wishlist

Magnetic Stirrer — Magnetic Stirrer
$54.90

For liquid container up to 94 mm diameter incl. stirrer stick and connection cable for GHL Doser 2

Wishlist

KH Director Reagent Set — KH Director Reagent Set
$112.90

Highly precise and stabilized reagent solution for KH Director, Flex-PVC-tube for reagent 70 cm.

Wishlist

Sensorholder 4 — Sensorholder 4
$45.90

Holder for 4 sensors, magnetic fixing, max. glass thickness 15 mm

Wishlist

Sensorholder1 — Sensorholder 1
$19.90

Holder for 1 sensor, magnetic fixing, max. glass size 12 mm

Wishlist

Silicone-Tube 6/4, 5 m — Silicone-Tube 6/4, 5 m
$14.90

Tube of Silicone, ID = 4.0 mm, OD = 6.0 mm, l = 5 m

Wishlist

Temp Sensor Digital — Temperature Sensor Digital
$74.90
Wishlist

Level-Sensor, Floater, Version 2 — Level Sensor, Floater, Version 2
$43.90

Level sensor, Floater
Mini-DIN, 3 m cable

Wishlist

Propeller Breeze 3 — Propeller Breeze 3
Price range: $79.90 through $159.90

High-performance aquarium fan, silent, ball bearings and brushless motors.

Wishlist

KH Director pH-electrode — KH Director pH-electrode
$94.90

pH electrode specially manufactured for the KH Director.

Wishlist

Conductivity Electrode — Conductivity Electrode, Platinum
$169.90

Conductivity electrode platinum, BNC, 3m cable, for fresh water + salt water

Wishlist

Hanging kit Mitras Lightbar, LX6, LX7 — Hanging kit Mitras Lightbar, LX6, LX7
$41.90

Suspension kit for ceiling-mounting GHL luminaires with flexible height adjustment. Includes 2x ceiling mounts, 2x 2 m steel cables, 2x height-adjustable cable clamps, and assorted M4 grub screws. Compatible with Mitras LX6, LX7, Lightbar 2, and Lightbar 3.

Wishlist

ION Director Multi-Ion sensor version 2 — ION Director Multi-Ion sensor version 2
$93.90

Multi-Ion sensor, especially for ION Director.

Wishlist

Level Sensor, Optical, Version 2 — Level Sensor, Optical, Version 2
$92.90

Level sensor, optical
Mini-DIN, 3 m cable

Wishlist

Leakage Interface — Leakage Interface
$47.90

Leakage interface, for connecting leakage sensors to ProfiLux
Mini-DIN, incl. 2 m cable

Wishlist

Dosing Hose Outdoor — Dosing Pump Tube for ProfiLux Outdoor
$23.90
Wishlist

Tubeholder 5 — Tube holder 5 (Magnetic)
$45.90

Magnetic tube holder. Holds up to 5 tubes.

Wishlist

S-L-Port breakout box BoB2 — S-Port & L-Port Breakout Box
$38.90
Wishlist