On this page you will find my DIY projects with use of air pumps for filtering water in aquariums.
Please notice that I do not use any man-made filters, air-pumps in my aquarium gardens since 2016.
And I do not change water in my aquariums - check my aquarium fish care for more details about this.
Algae, bacteria and plants are the best known on our planet filters that I use and wish you used them too.