The outlet nozzle for the external filter of the aquarium

thingiverse

https://www.youtube.com/watch?v=PFimi3UcA1Y There are two types of attachments for the filter outlet hose. 1. Fitting. Creates a directed flow of water. Cons: Not all inhabitants of the aquarium like the strong current. Residues of vital activity accumulate in places that are not washed. There is a possibility of creating a vortex in the aquarium. 2. Flute. Splits the stream into many small streams. Cons: Residues of vital activity accumulate in places that are not washed out. Loads the pump. To solve these problems, especially in long aquariums, additional flow pumps and additional filters are installed. I tried to get out of the situation in my own way. Several unsuccessful models, the simplest won. Three days of testing, no feces, no food leftovers.)