JBL AquaCristal UV-C 11 W *
Water clarifier for the quick elimination of cloudiness in aquariums

There are successor products for this item:
ProCristal UV-C 11W
  • Crystal-clear and healthy water: UV-C water clarifier for the quick and efficient elimination of greenish and whitish cloudiness in aquariums
  • Space-saving assembly: connection to external filter. Inlet and outlet on the same side
  • Germ-killing UV-C radiation of 255 nm, reduces risk of infection, no change of water values, no effect on cleansing bacteria in the filter
  • TÜV tested, safety switch: UV-C burner switches off automatically when the device is opened. Sturdy, UV-resistant casing: 4 mm PE reinforced walls
  • Package contents: water clarifier for aquariums, AquaCristal UV-C, cable length: 2 m supply cable to ballast unit, 5 m from ballast to UV-C unit
For more information
Recommended retail price incl. VAT
Dealer close to you
You can find this article at your specialist shop and online
Product information

Algae in the water
Poor light conditions, over-fertilisation or even a surplus of nutrients can have negative effects on the aquarium water and may promote the growth of algae. Floating algae lead to green, bacteria to white clouding.

Crystal-clear and healthy water
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 reflection of the UV radiation kills off bacteria, other germs and floating algae as the water passes through. 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. Simple assembly because inlet and outlet are on the same side.

The JBL UV-C clarifier is TÜV tested and has a safety switch for an automatic switch off, when the device is opened. The casing is UV-resistant and sturdy with 4 mm PE reinforced walls.

This product is unfortunately no longer available

JBL AquaCristal UV-C 11 W *

Art. no.:
EAN Code:
11 W
36,5 cm
Volume packaging:
10.100 l
Gross weight:
2550.000 g
Net weight:
2158 g
Weight factor:
115/220/400 mm

Technical Data

What JBL AquaCristal UV-C unit do you need for your aquarium or your garden pond?

Below you will find a synoptic table, which shows the ranges of the devices and the possible flow rate, depending on its intended purpose.

JBL AquaCristal UV-C: Can I leave the UV-C water clarifier running while using remedies?

Always switch off the UV-C water clarifier while using remedies.

JBL AquaCristal UV-C: You can see violet-blue light on the sides. Is that harmful for me?

The light coming out of the connectors and shimmering lightly through the casing is not harmful for humans and no longer contains any UV-C radiation.

JBL AquaCristal UV-C: When is non-stop operation of the burner advisable?

Particularly if you are experiencing trouble with bacterial infections of the animals, non-stop operation of the UV-C water clarifier is advisable. This is the only way to achieve effective reduction of the density of microbes in the water. If no diseases are present, operation can be limited to 12 h per day.

JBL AquaCristal UV-C: How long should the burner be on every day ?

It's not possible to make a general statement as to how long the burner should be on every day without seeing the aquarium, as information such as the germ load and the germ growth rate of the aquarium is required. However, in my experience, I would not keep the 36 W burner on for less than 12 h daily. In terms of the service life of the burner, non-stop operation would be preferable.

Show more FAQs ...
Blog – Opinions & Experiences


JBL AquaCristal UV-C for Disinfection – an Insight into a Master ‘s Thesis

Frau Fischer, a student at the University of Rostock, needed a JBL AquaCristal UV-C 5W for her master ‘s thesis. It was required to disinfect a radial fatigue test bench. Until then chemical additives had been used.

For more information
Worth reading

Daily care

How much daily or weekly care is involved? What are the basic maintenance measures for your aquarium?

The marine aquarium

Holiday at the coral reef - in your own living room! Marine aquariums are the most exciting branch of aquatics

Biotope (habitat) aquarium types

A real piece of the Amazon or, with the Congo, a piece of the heart of Africa. A habitat (biotope) aquarium is a challenge. Can you emulate nature?

Jungle aquarium type JBL Rio Pantanal®

A bit of jungle river in your living room. Lively underwater action! No problem with the JBL Rio Pantanal® aquarium

Rocky reef aquarium type JBL Malawi Rocks®

The fish of Lake Malawi are as colourful as the fish in the coral reefs. This aquarium brings a bit of freshwater reef into your living room

Goldfish aquarium type JBL Goldfish Paradise®

Lively goldfish in the aquarium enhance any room perfectly! Invite some new flatmates into your home with this goldfish aquarium


safety instructions

  • safety instruction for technical devices
    18 kByte
spare parts