This auto-top-off system is easy to install on your aquarium sump. Float valve for manual adjustment, no other tools, no metal screws, no corrosion . Comes with O-ring, can meet 16/12 water tube, non-leaking. It is suitable for aquarium under 15 thickness mm. The water level adjustment range is 0.5-15cm. The bracket is made of high quality material, stable enough and heavy enough, not easily knocked over. Product Description Description: The automatic filling system is easy to hang on the sump of your aquarium. It can automatically fill and close the inlet of water. You make it adapt to a wide variety of positions and heights. Package Includes: 1 * Water Filler water 3 * Accessory 1 * Bracket
