Device for controlling dissolution of a solid cleanser

A device to be placed in a water tank for controlling the dissolution of a solid cleanser, said device comprising:

• a housing including a weighed closed base to sink said housing to a bottom of said water tank, a surrounding wall detachably connected to said base and a top opening, said surrounding wall having an upper section and a perforated lower section;
• a floating container for receiving said solid cleanser therein, said floating container being movably provided in said housing and including a closed bottom having a peripheral edge, a perforated surrounding wall connected to said closed bottom, a top access opening and a cover detachably connected to said perforated surrounding wall so as to close said access opening, said floating container floating upwardly inside said housing when said water tank is filled with water such that said cover blocks said top opening of said housing and said peripheral edge of said closed bottom abuts against an inner surface of said upper section of said surrounding wall so as to interrupt fluid communication between said floating container and the exterior of said housing and to prevent water from entering into said floating container, thereby preventing excessive dissolution of said solid cleanser.