Co2 bubbles stops after couple hours
Hello guys, I have set up a yeast co2 system. I'm installing it to the tank and after a while co2 stops bubbling in the tank. So I'm taking out it from the tank just to check and it starts to bulle again. I tried this with an airstone and a diy diffuser and problem occurs with both of them. I think it is been clogged but how ? The tank seems to be clear.
I'm using two sponge filters and the tank is 100 liters.