These large foam block pre-filters connect to the inlet of your pond pump and often will replace the tiny pre-filter sponge that comes standard with some pond pumps. These larger filters take much longer to block up and will extend the life if your pump significantly, compared to a small standard pre-filter) if you choose to install one. They are a handy budget option for small ponds however they are much less effective than a pressure, gravity or all-in-one filter.
Need help choosing a suitable filter for your pond? Click on one in your price range - you will go through to a page with a lot more info which will help with your choice.
You can also visit our help section for more info and help forms you can send to us or just call one of our pond specialists on 1800 607 388.