aquarium auto top off

thingiverse

This cap is an innovative aquarium auto topping system designed to repurpose a cola bottle for refilling water into fish tanks automatically. The system is specifically engineered to work with glass fish tanks only and should not be used in plastic containers, as they may not withstand the pressure. Two files are included: one for 4mm thick glass and another for 5mm thick glass, catering to different thicknesses of tank materials.