This is a Pool Nozzle for ø32mm Hoses simply print it in a material of you choise, I would recoment PETG or ABS because of their Chlorine and UV-resistance. 

I used standart settings and turned on tree supports, but they are optional.

If you like this model, I would be happy if you would give me a Like so I can get free Filament ;)

Have a nice day and stay cool in these days!

To use it, simply put it into the end of you pool hose and attech it on top of your metal frame so you will get a fountain.