bubbble

Hello guys, I buy used a octo 220 elite INT he run since last satudray but he's been blowing big bubbles ever since... I've just cleaned the goblet.. for see this I think he have a problem also is very sensitive limit non-adjustable .... Ty for your help

Hi everyone, here I am again asking for help. I noticed today that there are some transparent bubbles on my cardinalfish's left side. The fish was staying most of the time in the corner of the tank ( quits the corner sometimes ) since a few days but I didn't think much of it because it actually...