What’s included 1 x black heater holder suction cup (each unit includes a clip) Why you need it Keeps your aquarium heater stable and in the correct position so temperature control remains consistent and fish are protected from contact with the heater. Simple, secure mounting that prevents the heater from sliding or falling if bumped during maintenance. Key features and specifications Suction cup diameter: 34 mm Clip opening: 24 mm Compatible with aquarium heaters with a diameter of 1 inch, PVC pipes or rain Fits most standard aquarium heaters Each suction cup comes with a clip to hold the heater firmly in place How it solves common problems Prevents heater displacement during water changes, feeding, or when fish interact with equipment Keeps heating elements positioned for accurate temperature readings and even heat distribution Compact design is easy to install and reposition without tools Practical use scenarios Secure a standard 1-inch diameter aquarium heater to the glass wall of a freshwater or saltwater tank Hold small PVC pipes or rain in place for DIY filtration or plumbing setups inside the tank Stabilize heaters in quarantine, breeding, or hospital tanks where space is limited and equipment must be fixed reliably Notes on installation and performance Attach the suction cup to clean, smooth glass for best adhesion Clip the heater or compatible pipe into the 24 mm clip and verify it is seated firmly Periodically check the suction and clip seating during routine tank maintenance A straightforward, reliable solution to keep your aquarium heater or compatible tubing secure and functioning as intended.