Aquarium Intake Filter for 13mm Siphon Tubing

A simple filter with small holes. It shall prevent that small fishes are sucked into a tubing when water is pumped out to exchange it. I also also limits the minimal water level to 10 cm. Designed for tubings with 13 mm inner diameter.

The diameter of the holes is 1 mm. The amount of holes appear to be sufficient, adding more holes would probably rather reduce the rigidity than to provide significant benefit; At least this is my impression.