These filters look gimmicky but they work! No need to change the filter. All you need to critically do it make the pump stop the bubbles as betta fish does not like strong currents. I have done this in one of my tanks. With betta one does not need to worry much about aeration as this is one of those fish that come to the surface to get air (not sure what type they are called. Gouramis also do that)
PFA pic. You need a plastic thing that you can super glue it on the vent. This stops the bubbles and moves more water to the top filter but may make the pump run a tad hotter and bit louder. Make sure you have a lot of 30 ppi foams/filter floss in the filter tray. Don't add more fish not even one. I hope you used Seachem Prime before putting the fish in.
PFA pic. You need a plastic thing that you can super glue it on the vent. This stops the bubbles and moves more water to the top filter but may make the pump run a tad hotter and bit louder. Make sure you have a lot of 30 ppi foams/filter floss in the filter tray. Don't add more fish not even one. I hope you used Seachem Prime before putting the fish in.
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