Hi, I have a 20Gal H tank with a DIY CO2 with an airstone for small bubbles and an Aquaclear 200 powerfilter. Now, they told me that the filter could be gassing off my CO2 because of the water movement and agitation. To what extent is this possible? And if it is critical what can I do as for filtration? If I should change the filter, then which filter?
:help: