Intercooler Water, Question for the W/A guys Options

[Defgeph]

I'm just wondering what causes this water to rise and fall in the video below. I open the bleeder on the heat exchanger while filling it with water. So I know thats full of water. Is this normal operation? Or is there still air in there.

Water pump is wired to run constantly. The car is not running in this video, you are hearing the fans running. I forgot to shut them down.



Thanks guys,
DEF

[phattyduck]

I use about 20% Toyota Red coolant, a little watter wetter (maybe 1/4 to 1/8 a bottle) and the rest distilled water. My car will never see temps below about 25*F.

I get the little frothy bubbles too, but not so much with the level going up and down. I wouldn't worry too much about it though. When the radiator cap is on there, it shouldn't happen nearly as much.

-Charlie