posted on the other thread that was discussing airpumps and mistaken it.
If you can find a link to where you got your bubble disc from it would be greatly appreciated, tried looking and couldn't find any like yours. I like the fine bubbles it's putting out in your vids unlike most of the others.
tiny rays, big bass. how much did it cost you total? tank and everything?
Cool setup! You don't have any trouble with the bass or pike nipping at the rays?