Accessories for water cooling

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Connections for water cooling / heat recovery

Product no.: 170-00

Different options for water supply of water cooling system are available.

From 2.99 *
In stock
Delivery: 2-3 working days

Minipump for operating the water cooling system

Product no.: 175-000

A very small and economic pump for operating the water cooling system

From 16.99 *
In stock
Delivery: 2-3 working days

Cleaning brush set for water cooling

Product no.: 180-00

For cleaning the LED bar cooling system

6.99 *
In stock
Delivery: 2-3 working days

TITAN water cooling upgrade for seawater

Product no.: 185-00

Enables the use of the water cooling system for seawater aquariums

From 14.99 / set(s) *
In stock
Delivery: 2-3 working days

Air pump for cleaning the water cooling system

Product no.: 181-00

For fast and simple cleaning the cooling system by air pressure

7.99 *
In stock
Delivery: 2-3 working days
Prices incl. VAT, plus delivery


The use of water cooling is an advantage, but not mandatory. The temperature-optimised aluminium profile of the PRO² LED bar also provides passive cooling. But with active water cooling, the LEDs are optimally cooled, the waste heat from the LEDs is put to effective use and the aquarium is heated.

Water cooling: In spite of the much higher efficiency of LEDs compared with conventional lighting systems, LEDs also convert part of the energy they consume into heat. This heat must be conducted away by a cooling system, either passively through an aluminium profile and/or actively.

The PRO² LED lamps can operate with a water cooling or heat recovery system, which means the LEDs are always within their optimum temperature range. Because starting of the first day a LED, whether for household or aquarium application, loses slowly but continuously its luminosity. The value of LED chip service life (eg 50,000 hours), as it is found in the technical data, says that the LED delivers only 50% of the former luminosity after this period of operation. An optimal working temperature through cooling significantly counteracts this creeping process.

Heat recovery: Heat energy that is lost in conventional LED lighting and remains unused is effectively used with the PRO² LED lamps. The system supplies the resulting waste heat to the aquarium water and thus noticeably relieves the aquarium heating.

The water cooling with heat recovery becomes a great advantage of your aquarium.
Simple - ingenious!


* The graphic shows exemplary values: Room temperature, heater, water volume etc. must be taken into account and lead to individual results.


Advantages and functions:

  • The LEDs work within their optimum temperature range, which maximises the output of the LEDs and extends their period of peak lighting performance.The heat recovery / water cooling system uses the waste heat from the LEDs and feeds the aquarium with warm water.
  • The electricity consumed by the aquarium heating is drastically reduced.
  • PRO² LED bars with heat recovery pay for themselves very much quicker than other LED lighting systems: Lower electricity consumption with light and heat!
  • The two integrated XL channels that provide water cooling to the LED bars ensure high flow rates, excellent cooling properties and very high efficiency.
  • You can feed the water cooling system through a bypass in your filter system's water circulation circuit or by means of a separate pump.
  • The system is nearly maintenance free and extremely durable thanks to high quality components manufactured from stainless steel and silicone.
  • As you would expect, you can connect several PRO² LED bars together in parallel or in series.
  • Low-noise operation


Water cooling connection


  1. 180° silicone bends for connecting the feed and return sides. (Included in the scope of supply)
  2. Cooling and warm water connections; hoses can be cut to length as required.
  3. Version 1: Cooling water feed by bypass. Select an adapter (T-connector) that matches the existing hose system.  Use the hose line that feeds the filtered water.
    Version 2: Alternatively the cooling water can be taken directly from the aquarium by means of a minipump. (See Accessories)


Calculation of the water temperature when using heat recovery

Volume of water:

Length of edge:


Water level:

Room temperature:

°C   (= temperature of unheated water)

Number of

144 cm:

115 cm:

89 cm:

74 cm:


Number of






Insulated surfaces: Left
Top (Deckel)

Estimated water temperature:

The result provides an indication of how much the heat recovery system contribute to heating your aquarium water (= relieving the load on the aquarium heating = saving energy). Please note that the calculation does not take into account any other sources of heat, such as pumps or heating elements.