Betta's in his tank but there's a problem...

[Upirium]

There seems to be a current coming from all of those bubbles so he kind of just floats around...
Is there anyway I can weaken the current? Like putting something over it some how? Maybe gravel? I dunno.
edit
I found I had a really strange...tube like thing with a tiny air stone in it. The bubbles go upward and out the top in these slits but it seems to be creating a small current at the top. I don't think he notices it but I dunno ><  

[Gabrielle_AnimalLuver]

the current is coming from the air stone? I use a boby pin/hair pin to bend the tube which slows the air flow down.  

[Azusanga]

I use a bag clip. Bend a section of the room in half, clip the bag clip on it, and move the tubing back and forth to make the right current. Works wonderful for me.