Bio-wheel filters are the best as far as I'm concerned.
However they do have problems with the wheels not turning.
You have to be very meticulous about cleaning them. Make sure the filters are clean and take it apart and clean the impeller assembly. You'd be surprised how much gunk can collect. It reduces the amount of water flow to the point that the wheel doesn't turn.
However they do have problems with the wheels not turning.
You have to be very meticulous about cleaning them. Make sure the filters are clean and take it apart and clean the impeller assembly. You'd be surprised how much gunk can collect. It reduces the amount of water flow to the point that the wheel doesn't turn.