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

Hi,

this is mine bottle holder for my 37.5L(10galon) aquarium and it is used to hold water in your aquarium on a steady level.

How to use:

Print this tool and use a 0.5L bottle (with sharp bottleneck).

A bottle can be placed in a hole of holder once and every time it empties, it can be refilled and placed on the corner of the fish tank again, until enough water evaporates to refill it again.

P.S. This tool is used to concentrate CaCO3 depositors to form on one fine line and to hold water level at the same high and it is not substitute for the water change.