pre-filtration

Good pre-filtration should help to avoid clogging here.

Pre-filtration: This is the first stage of filtration, and consists of a physical barrier, typically open cell foam, which prevents large particles from passing through.

Mainly suitable for main filtration the manufacturers claim that by stuffing it more tightly into your filter you can use it for pre-filtration too.

Water pre-filtration is critical so as to lower water turbidity which will lower UVC penetration.

Although useful for protecting the instrument, the pre-filtration of the sample has the possibility of removing higher molecular weight sample before it can be loaded on the column.

In clean manufacturing processes, filtration often takes place in several stages, where pre-filtration is first carried out to protect the high-efficiency filters, which are much more complex and consequently more expensive.

Generally the size of the pond and perhaps more importantly, the number and size of the inhabitants will dictate whether brushes and a fully-fledged settlement chamber or other forms of pre-filtration are required.