Aquarium bottle holder 4mm glass(4.5mm gap) v1.0

thingiverse

Hi, this is my bottle holder for my 37.5L (10 gallon) aquarium, and it's designed to keep your aquarium water at a steady level. How to use: Print out this tool and use a 0.5L bottle with a sharp bottleneck. Insert the bottle into the holder once and refill it every time it empties. Place the bottle on the corner of the fish tank again until enough water evaporates to require refilling. P.S. This tool is designed to concentrate CaCO3 deposits onto one fine line, maintaining a consistent high water level. It's not meant to replace regular water changes.