TESTS ARE GOOD? ECONOMIC AND COMMON FILTERING MATERIALS

Hello friends aquariums here leaving you a video for these days of confinement, I hope it is to your liking, and teach you how it has worked for me or how I have modified my filters to put more filter load or beads.
HEY !!! I INVITE YOU TO SUBSCRIBE TO THE CHANNEL to see more content like this.
/ aquahobby-105310811156693
/ @aquahobbycancun