What do I need to be aware of in the winter as far as pump and filtration technology are concerned?
Usually pumps and other equipment that is sensitive to frost must be switched off, removed, and stored in a frost-free location. In smaller bodies of water it is important that the warmer survival zones for the fish are not recirculated. In larger bodies of water a small water exchange in the bank area helps prevent freezing over. For winter care: The pump should be carefully cleaned inside and out and stored in a water-filled container – in a frost-free location. This keeps gaskets moist and possible sludge residue cannot harden.
