“I bought this as a replacement for the old style pump and connection converter which was in my venerable Juwel Rio 180 internal filter. Unfortunately, I have deducted 2 stars due to (1) the silicon seal making it very hard to push the pump into the filter housing and (2) the lack of a clear warning that the inner flanges on the 2 seals supplied for the outlet pipe were different widths. I was very stressed trying to push the wrong outlet pipe seal into the filter housing, until I realised the other seal was needed.”
