. . .read the instructions.
For the last decade or so, The Squire has marched into semi-annual battle with the water filter. The bottom of the filter fits over a little nub in the bottom of the housing, and the top snugs up against a matching nub under the lid. You could hold the filter in place, but once you began to screw the entire fitting together, you simply had to move your fingers, and the water in the housing would cause the filter to float loose from its moorings.
The last time we replaced the filter I suggested using store-bought white bread to brace it in place, on the theory the bread would break up and float away. It didn’t; instead, we had a lovely moldy green lump sitting in the housing.
The Squire went to the local Big Box and got a new filter, and he and I began the tedious process of installing it. When he took it out of the package a piece of paper floated to the floor, which I bent over to retrieve.
INSTRUCTIONS: To install the filter . . you put it in dry and then turn on the water. Took five minutes, if that.