Bubbles in EC System

[Roddefig]

I recently built an evaporative cooling system for my computer and I'm having lots of issues with air bubbles. The intake on the tower seems to take in air and I have no idea why. The water level is far above the intake. It also seems to take in air when bubbles come through the sprayer at the top, and I don't know why this would happen. It doesn't seem to adversely affect cooling that much (I have 40 C load temps), but it might lower it a few degrees if I could stop the bubbles coming in. Anyone have any ideas?

[Aphex_Tom_9]

fill the tube with ping-pong balls or something, to discourage surface turbulence in the bottom of the tube, maybe?

[Polonator]

What do you mean by "intake" for your tower? Do you mean the part where it OUTPUTs to your pump?

I found ping pong balls too restrictive to airflow when I filled my tower with them. If turbulence is an issue at the bottom, maybe you could try putting a piece of foam or sponge at the bottom of the tower to dampen the water's fall?