Mr. Muscle 3in1 Marine In-Tank Block Toilet Refresher 50g Pack of 2

1.) Remove the plastic bubble from the carton and remove the block. 2.) Place it in the water tank without stripping the film *. To extend the period of use, place it under a floating ball, which is far from where the water drains. 3.) The film will be dissolved in water after a while, so wait at least 10 minutes for the first pumping. 4.) When the blue color fades, place the new block into the tank. * Water soluble film should not be removed, it will dissolve automatically in water.