A method and apparatus for cleaning candles in a candle filter using a cleaning fluid that flows inside the candle from the side of the filtrate, whereby said fluid is pressed in an opposite direction to the direction of the filtrate from the inside to the outside, through said candles, by a gaseous medium subjected to an overpressure. Water is or can be used as an appropriate cleaning fluid and air is used as a gaseous medium. The prior art teaches nozzle-shaped contractions that are respectively disposed on the outlet end of the candles or deflectors arranged inside the candle at a distance from said contractions, whereby the in-flowing cleaning fluid is deflected towards all sides in the direction of the inner walls of the candles, are provided for distribution of said cleaning fluid. One disadvantage of this prior art is that the nozzle-shaped contractions which feed fluid into the inside of the candles are also used for compressed air, whereby it is impossible for the cleaning fluid to flow when a pressure impulse is fed in. The aim of the invention is to provide an improved solution to this problem so that the cleaning liquid can continue to flow automatically inside the candle despite the presence of a pressurized gaseous medium so that the inside of the candle can be quasi-constantly impinged upon by the cleaning fluid. In order to achieve this, the cleaning fluid and the gaseous medium are fed into the inside of the candles via separate flow paths.