As some of you know, I have put my UP inline diffuser onto the intake of my Eheim Pro 600 filter, to minimise the amount of visible bubbles in the tank water. All good, except for the fact that the filter burps a few times an hour, making an annoying, loud "gushing" noise.
I'm guessing this is to do with the Co2 gas becoming trapped underneath the filter media, and then all the trapped gas being released at once through the spray bar? Which media should I remove to eliminate the burping? At the moment I only have one coarse filter sponge (pre- filter), and two thin trays of assorted bio- media (Sera Siporax, Eheim Substrat pro coco pops).
I'm guessing this is to do with the Co2 gas becoming trapped underneath the filter media, and then all the trapped gas being released at once through the spray bar? Which media should I remove to eliminate the burping? At the moment I only have one coarse filter sponge (pre- filter), and two thin trays of assorted bio- media (Sera Siporax, Eheim Substrat pro coco pops).