JBL PROCRISTAL UV-C Compact plus 36 W
Compact UV-C water clarifier 36 W against water cloudiness

  • Crystal-clear and healthy water : 36 W UV-C water clarifier for the quick and efficient elimination of greenish and whitish cloudiness in freshwater and marine aquariums and in garden ponds
  • Space-saving assembly: connect to external filter or separate pump. Inlet and outlet are positioned for practical use. Shortest Installation length: 61 cm
  • Partial sterilisation for aquariums up to 3000 litres (pump max. 1000 l/h) /15,000 l pond (pump max. 4000 l/h), against floating algae up to 800 l in the aquarium (pump max. 1000 l/h) / pond up to 8000 l (pump max. 4000 l/h)
  • TÜV tested, safety switch: UV-C bulb switches off automatically when the device is opened. Sturdy, UV-resistant casing, 2- glass-cylinder design
  • Package contents: complete UV-C device, 5 m cable, UV-C bulb 36 W, socket: 2G11, wall mount, V2A screws, nozzle hose connections for 12 - 40 mm hoses. Guarantee: 2 years (+2 years upon registration of the product)
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Recommended retail price incl. VAT
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Product information

Crystal-clear and healthy water
Poor light conditions, over-fertilisation or even a surplus of nutrients can have negative effects on the aquarium water and may promote algae growth. Floating algae lead to green, bacteria to white clouding. The JBL water clarifier eliminates cloudiness caused by bacteria and floating algae. The aquarium water passes through the sturdy, UV-resistant casing of the clarifier. The UV radiation kills off bacteria, other germs and floating algae as the water passes through. The efficiency of this UV-C water clarifier is particularly high, as the glass bulb is surrounded by a polished, reflective stainless steel foil, which reflects the UV-C radiation and thus doubles the efficiency. This can also help to eliminate persistent algae, such as thread algae, since their spores are also largely killed off.

No harmful side effects
No change of the water values / no negative influence on the essential cleansing bacteria in the filter.

Easy to install
Connect the water clarifier to the external filter or a separate water pump. Thanks to the 90° elbow included in the pack any installation position is possible.

The JBL UV-C Water Clarifier is TÜV tested and has a safety switch for an automatic switch off when the device is opened. The casing is UV-resistant, consists of sturdy walls and has an LED light that indicates whether the UV-C bulb is switched on.

Difference to the previous model JBL ProCristal UV-C Compact:
The function indicator light is now mounted on the flat side of the electrical unit and the microswitch for the automatic switch-off of the burner when the housing is opened (if the plug has not been removed) has been replaced by a magnetic safety switch. This means that the electrical units of the previous models (Compact) do NOT fit the new ones (Compact Plus) and vice versa.


JBL PROCRISTAL UV-C Compact plus 36 W

Art. no.:
EAN Code:
36 W
56,5 cm
Volume packaging:
20.000 l
Gross weight:
3232.000 g
Net weight:
2696 g
Weight factor:
Packaging dimensions (l/h/w):
165/210/577 mm

Technical Data

power output in Watt:36 W
Height:141 mm
Length:642 mm
Width:246 mm
voltage:240 V
Is the UV-C bulb defective if it rattles and there is a small ball inside?

No, this bead consists of mercury and is absolutely necessary. The bulb is only defective if the ignition filament is torn.
After the lamp has been ignited, the temperature inside increases and liquefies this bead, creating mercury vapour. The resulting ionisation processes ensure the desired UV-C radiation to kill germs, bacteria and algae. Due to the mercury content, used UV-C bulbs may only be disposed of at appropriate collection points (e.g. for fluorescent tubes).

How often does the UV-C bulb need to be replaced?

The UVC bulb needs to be replaced once a year in the early spring (when operating in garden ponds) or after max. 6000-8000 operating hours.

Why is combatting cloudiness less effective than partial sterilisation?

A partial sterilisation (against bacteria) is more effective than eliminating clouding caused by floating algae. Why? Because the cell structure of bacteria is quite simple. That’s why it is easier to destroy the cells of bacteria than those of algae.

Can I store my water tests near a UV-C device?

Storing water tests near a UV-C unit will not cause any problems.

Does a UV-C device kill free floating cyanobacteria in the aquarium? I have mechanically removed cyanobacteria in the aquarium. Some of them must be floating around freely now.

The JBL PROCRISTAL UV-C Compact plus can also kill off cyanobacteria floating freely in the water.

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Blog (opinions & experiences)

Video: How do you install a UV-C water clarifier?

We will show you how easy it is to assemble a UV-C water clarifier.

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  • JBL ProCristal UV-C Compact Plus 36 WQuick Guide

safety instructions

  • safety instruction for technical devices
    • Filename:
spare parts

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