| | Re: HELP! Powerhead and betta problems!
You can eliminate the air bubbles by removing the air intake pipe and fully submerging the filter. But even without the bubbles, the current will still be there and as powerful since the bubbles just makes it visible before. Unless you baffle the outlet, then the water flow will just be the same. There are some sponge filters rated for big tanks and though very underrated, sponge filters can be as effective as other kinds of filters.