Hi,
We have one too and just done our filter for the first time, last one lasted 2 years, but that's because we only use it for drinking water. You can fit the filter on the main pipe going into sink and not need the separate tap which is what some do.
So I don't see any reason why you can't find a spot to fit the filter on the pipe as it leaves your tank to feed all the taps.
Not sure why you would want to filter your shower water though, I think it may work out a tad expensive as the filter runs out faster depending on how much water passes through it.
Will be interesting to know though.
Mandy
We have one too and just done our filter for the first time, last one lasted 2 years, but that's because we only use it for drinking water. You can fit the filter on the main pipe going into sink and not need the separate tap which is what some do.
So I don't see any reason why you can't find a spot to fit the filter on the pipe as it leaves your tank to feed all the taps.
Not sure why you would want to filter your shower water though, I think it may work out a tad expensive as the filter runs out faster depending on how much water passes through it.
Will be interesting to know though.
Mandy