Yes, this is a 1" hose connector. Both the inlet connector and the outlet connector are covered like shown in the picture. Interesting but nothing else has any. The ribbed hose shown above the connector is clean, the plastic tube going to the inlet strainer is clean. Must be something to do with the material that the connectors are made of?? I looked several times and I don't see more or less, no movement, just the same. I did rinse the parts before I started the filter.
50G Low Tech Planted Tank- Community Fish
120G Low Tech Planted Tank- Community Fish