aeration

[fish]

hi guys, just joined after lurking for a few weeks. great advice dished out. on the topic of aeration; how is it that streaming bubbles through a tank doesn't give as much O2 content as surface agitation. surely its the same difference?

[YellowFinned]

Aeration happens at the water surface. The combined surface area of all the bubbles is little compared to the surface of a tank.

The way a stream of bubbles helps is in circulating the water and continuously agitating the surface.

[fish]

ahhh gotcha, cheers mate. currently doing both in my clown loach tank so i'll stick with it.