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Many high-quality UVC filter systems have a control display that reports whenever cleaning is required.
also read
- Cleaning the pond filter - this is how it works
- Pond filter: how long should it run?
- Pond filter overflows - what can you do?
Other filter systems, on the other hand, often have a transparent hose cover, from which you can see whether the water in the hose is cloudy or clear. If it is cloudy, cleaning is necessary. The same applies if only very little water flows through.
Before installing the filter, check the operating instructions to find out what type of cleaning indicator your filter has, and familiarize yourself with it. Only a few filter models have no display at all, but in these cases the manufacturer often provides information about when cleaning is required.
Basic cleaning requirements
Especially with systems with UVC technology, you first have to familiarize yourself with how the filter works in order to understand when cleaning is necessary at all.
The cleaning in the filter is done by bacteria that settle in the filter sponge. First of all, they have to multiply in order to be able to perform the task in sufficient numbers.
The multiplication and settlement of the bacteria can cause a greasy, sometimes foul-smelling coating on the filter sponges. This is not a sign that cleaning is necessary, but a sign that the filter is working!
If you were to remove or rinse this deposit, the bacteria would be flushed out at the same time. But it is you who do the real work in the filer. Every time you rinse the filter sponges, the bacteria would have to colonize again afterwards - during this time the pond will not be cleaned effectively.
Avoid cleaning the pond filter too often under all circumstances, as this will drastically deteriorate the water quality in the pond itself and the pond filter will have little effect.
Tips
In the case of individual filters, rinsing the filter sponges is permitted - but this must be stated in the operating instructions. In these cases, you should only ever use cold water for rinsing - hot water would destroy the entire bacterial culture! Here, too, cleaning is only carried out when the filter is so tightly blocked that hardly any water can flow through - then the bacterial lawn must be carefully “thinned out”.
