An easy way to make a simple koi pond filter from a leemineral bottle

welcome to my channel
on this occasion I tried various videos, how to make a fish pond filter from a mineral water bottle. with simple ingredients and I hope the results are special, because the water is clean and the bonus is the venturi working system because the flowing water sucks the wind
so that dissolved oxygen in the water increases
#fish pond
#simple pool filter
may be useful
#salamsatuair