JBL AquaCristal UV-C 5W
Water clarifier for the aquarium (freshwater and saltwater) and pond
- New: With reinforced 4 mm PE walls (previously 2.5 mm).
- Inner walls in carbon black colour. Improves the UVC resistance. Removes greenish (floating algae) and whitish (bacterial) cloudiness caused by UVC radiation reliably and quickly.
- Reduces germ contamination and the risk of infection without side-effects.
- Length of cable: 2 m leading to the ballast + 5 m from the ballast to the UV-C unit.
- Connection sizes
- Part 1: 12/16, 16/22, 19/25
- Part 2: 5/4”
- For aquariums up to 500 L
- For garden ponds up to 4000 L
Type of product
|Volume packaging:||8.850 l|
|Gross weight:||2075 g|
|Net weight:||1730 g|
What JBL AquaCristal UVC 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.
What is the power consumption for the JBL AquaCristal UV-C 5 W water clarifier ?
A JBL AquaCristal UV-C water clarifier comprises the UVC burner and a ballast. The ballast also consumes a certain amount of electricity so that the total electrical power of the UVC clarifier is higher than the power used in the UVC lamp.
The following table provides an overview of the actual measured values.
JBL AquaCristal UVC 5 W
Voltage: 236.6 V
Current: 0.16 amp
Volt-amperes: 37.86 VA
cos phi: 0.24
Active power: 9.1 W
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: Does a UV-C water clarifier heat up my tank water?
It is relatively unlikely that a UVC water clarifier will heat up tank water, at least to the extent you have indicated. The so-called delta temperature, that is the difference in temperature between the temperature setting and the temperature actually reached, as well as the room temperature, would be important for an assessment.
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: Can I store my water tests near the UV-C appliance?
Water tests can be stored near a UV-C water clarifier with no trouble, as the bluish light that "shines out of" the hose connector is harmless. Besides this, the liquid reagents are contained in dark plastic bottles.
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.
JBL AquaCristal UV-C: Does the ultraviolet light destroy active ingredients of my aquatic plant fertiliser?
UVC breaks down the chelators in the fertilizers, which prevent the precipitation of trace elements such as iron, among others. Therefore, when using a UVC water clarifier, it is advisable to change over to daily fertilization and convert the standard dose into a daily application at the beginning. It may also be necessary to increase the fertilizer dose slightly. Iron should be detectable in traces at least prior to the next application of fertilizer. Vitamins and other higher grade organic compounds may likewise be broken down. Therefore, when using vitamins, it is advisable to add the fertilizer with the food twice a week.
JBL AquaCristal UV-C: There are sure to be some of them floating around now, and I would like to know whether they will be killed by a UV-C water clarifier.
A UV-C lamp kills all of the organisms floating around in the water, to the effect that the cyanobacteria will be killed as well.
JBL AquaCristal UV-C: What do you mean by flow rate, and should I reduce the filter output?
Flow rate refers to the actual rate of flow through the UV-C water clarifier. If the UV-C water clarifier is connected behind the filter, all of the water cleaned by the filter flows through the clarifier and the sterilising effect lasts much longer (relative to the total amount of water in the tank). When using a filter with a high output, it is recommended to either use separate installation by means of a small circulation pump or operation in a bypass, i.e. from the filter outlet into a Y-piece, next, to install the clarifier in one of the circuits and then to connect the two hoses again by using a second y-piece, and then to lead back into the tank.
After two weeks, there is still slight whitish cloudiness in the tank. Therefore, I would like to purchase a UV-C clarifier. What output do I need to get ?
Please check the table in the instructions for use which can be downloaded at http://www.jbl.de/de/aquaristik-suesswasser-produkte/detail/2387/jbl-aquacristal-uv-c-5w#download.
How much electric power (Watts) does my AquaCristal UV-C water clarifier need for a partial sterilization?
In the instruction booklet for the JBL AquaCristal we recommend the 18 W UV-C water clarifier for a partial sterilization of aquariums of up to 400 l max. and with a flow rate of up to 200 l/h. For a more extensive germ elimination the use of the bigger 36 W clarifier is advisable. Here the recommended flow rate of about up to 400 l/h needs to be taken into account. This makes a bypass connection advisable for most of the usual external filters in such aquariums.
I have green water in my aquarium, and even water changes and changing the filter media only helps for a short time.
Green water means floating algae, which grow when they have no competition with other plants and, even more, when the excrements of the fish create an excessively strong nutrient pollution in the water. The filter will not be able to do much about this. Ultimately, there are only two possibilities:
1. Carry out significantly more water changes in order to remove the nutrients caused by fish excrement.
2. A JBL AquaCristal UVC water clarifier kills off the floating algae.
A temporary measure is to switch off the light for 2-3 days in order to stop the photosynthesis of the algae.
Size of JBL AquaCristal UV-C 5 W ?
The data refer to the installed appliance without control gear:
Length incl. of cable gland: 22 cm
Housing diameter, measured where lamp holder screws onto UVC steriliser body: 8.5 cm
Diameter with hose-tails and mount: 16 cm
In the graphic depiction in the instructions for use for JBL AquaCristal UV-C, the UV-C water clarifier is connected behind the filter in an aquarium, whereas it is connected before the filter unit in a pond. Why is that so?
A UVC water clarifier is generally always connected behind the pump in order to ensure a proper flow.
In the majority of pond filters (with the exception of pressure filters), the filter holder is higher than the pond water level and the water flows out of the filter and down into the pond. The pond pump is in the pond. This is why the UVC water clarifier needs to be installed between the pump and the filter unit, to prevent the water from flowing back into it and blocking it.
Do I have to turn off the UV clarifier when I add JBL Denitrol to my aquarium?
Yes, that would be advisable. It takes some time for the bacteria to settle on the substrate and, until then, they float freely in the water, so that the UV-C rays would kill them off. Therefore, it is recommended to turn it off for 1 day this day.