Aquarium cleaning device

An aquarium cleaning system comprising:

• an isolation zone forming member having opposing first and second sides, said isolation zone forming member defining a first liquid passage extending therethrough between said first and second sides and terminating at a first opening on said second side, and said isolation zone forming member defining a second liquid passage extending therethrough between said first and said second sides and terminating at a second opening on said second side;
• a gasket secured to said isolation zone forming member and extending outwardly from said second side and forming a loop around said first and second openings;
• said isolation zone forming member being held against an interior surface of an aquarium sidewall with said gasket in sealing contact with the interior surface and forming an isolation zone between said second side of said isolation zone forming member the interior surface of the aquarium sidewall;
• a chemical solution circulated through said isolation zone by flowing through said first and second liquid passages;
• a first magnet fixedly attached to said isolation zone forming member;
• and
• a second magnet disposed on an exterior surface of the aquarium sidewall and magnetically attracting said first magnet to hold said isolation zone forming member against the interior surface.