Tony:

No, I do not chill the water, outside air temperature is fine....

I drilled the PVC pipe with lots of small holes and placed it lengthwise in the tank so all the bottom area is covered with lot's of very fine bubbles, it has a vertical stand pipe with an elbow and the compressor fitting on that elbow.......has worked quite well for years....

Played with different combinations of B-C and other additions, times, temps, etc., just to experiment with different colours........lot's of fun as you have found out.......

I don't spray clear lacquer on them, as I think it looks tacky...JMO.......and it also yellows later and really looks nasty.........

Here's a couple more different ones Tony.......



Best,

Doug