In unserem FAQ‑Bereich findet ihr Antworten auf die am häufigsten gestellten Fragen. Solltet ihr hier nicht fündig werden, zögert bitte nicht, uns direkt zu kontaktieren – wir helfen euch gerne weiter.
By flow rate we mean the actual water flow through the UV-C water clarifier. If you connect the UV-C device behind the filter, all of the water which is run by the filter flows through the water clarifier, and the germ-inhibiting effect takes significantly longer (with regard to the total water amount of the aquarium). With powerful filters either the separate installation by means of a small circulation pump or the operation in bypass mode is recommended. This means running the water from the filter outlet to a y-piece (separation of the water), with the water clarifier installed in one of the water cycles, and then you can reconnect both hoses over a second y-piece, before the water flows back into the aquarium.
With the JBL PROCRISTAL UV-C QuickConnect you can join all PROCRISTAL UV-C devices together. It doesn't matter whether they have the same performance.
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.
UV-C light degrades the chelators in the fertilisers which prevent the precipitation of trace elements, such as iron and some others. When using a UV-C clarifier we therefore recommend you switch to a daily dosage. At the beginning simply convert the standard dosage (of e.g. JBL PROFLORA Ferropol 24) into a daily dose. It may be necessary to increase the fertiliser dosage. Before each fertiliser application iron needs to be measurable at least in traces. Vitamins and other superior organic compounds are also degraded in this process.Therefore we advise you add a dose of vitamins to the food (e.g. with JBL Atvitol) twice a week.
Without an onsite assessment we are unable to recommend how long your UV-C device needs to be in operation each day. For this we need to know the germ load and the regeneration level of the germ density in the aquarium. However based on values of our own experience we would recommend running the device for an absolute minimum of 12 h a day. A continuous operation is, however, better for the durability of the bulb.
Yes, this would be useful. The bacteria, as for example in JBL Denitrol or JBL PROCLEAN BAC, need a little time to settle on the substrate. Until then they are floating freely in the water so that the UV-C radiation can kill them off. It is therefore recommendable to switch off the UV-C device for a day.
Deposits (dirt, limescale etc.) inside the casing prevent the optimum efficacy of the UVC water clarifier. Therefore the inside of the appliance needs to be cleaned about twice a year, more frequently if the performance significantly deteriorates.
Green water means floating algae, which grow when they have no competition from other plants and, even more, when the excrement of the fish creates excessive nutrient pollution in the water. The filter will not be able to do much about this. Ultimately, there are only two options: _x000D_ _x000D_ 1. Carry out significantly more water changes in order to remove the nutrients caused by fish excrement. _x000D_ _x000D_ 2. A JBL PROCRISTAL UV-C Compact plus kills off the floating algae. _x000D_ _x000D_ A temporary measure is to switch off the light for 2-3 days in order to stop photosynthesis in the algae.
No, unfortunately this is not possible. However, it is possible to connect a second JBL PROCRISTAL UV-C Compact plus unit to a 5 W unit via the JBL PROCRISTAL UV-C QuickConnect.
A JBL ProCristal UV-C water clarifier consists of the UV-C burner and an electronic ballast. The ballast itself needs a low amount of electricity. The total output of the UV-C water clarifier is therefore slightly higher than the power, converted into UV-C light. Further information can be found on the type plate and the operating instructions.
When using medications you should definitely switch off the UV-C water clarifier.
With problems concerning bacterial infections of animals, we recommend the permanent use of JBL PROCRISTAL UV-C Compact plus, or similar. This is the only way to achieve an effective reduction of the germ load in the water. If no cases of illness are present, the operation can be limited to 12 h per day.
A UV-C device is generally connected at the outlet of the pump in order to ensure a proper flow. _x000D_ _x000D_ In the majority of pond filters (with the exception of pressure filters), the filter canister is higher than the pond water level and the water flows out of the filter then flows freely downwards back 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 keep backwater out of the UV-C device.
No, this bead consists of mercury and is absolutely necessary. The bulb is only defective if the ignition filament is torn. _x000D_ 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).
The question itself sounds strange and the answer is not surprising. No, do not use two seals under any circumstances. If a seal is not tight, it may already have aged too much or be defective. Two seals on top of each other take up too much space and do not provide increased tightness, on the contrary. Therefore, replace a seal that does not work. By the way: with JBL SiliconeSpray you look after your seals and significantly improve their service life.
How often a UV-C bulb needs to be replaced, for example in the JBL PROCRISTAL UV-C Compact plus units, depends on its operating system. After a maximum of 6000 - 8000 operating hours, the output will have dropped so far that a change is necessary. In the case of continuous operation (24 hours), a replacement will be necessary after 250 days. That’s why in ponds the bulb is best changed in spring while the technology is being restarted.
For each connection fitting there is a seal in the carton and another fitting for the special elbow fitting. Thus for the 5 W and 11 W version 3 seals and for the 18 W and 36 W version five seals are enclosed. All the seals in the carton are the same size. Never use two on top of each other since this can lead to leakage. Please only use one seal for each connection.
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