Bubble counter Special Effects
Instead of using water for a calcium reactor bubble counter, use glycerin instead. It has the viscosity of motor oil but is crystal clear. the bubbles will rise much smoother and slowly making it easier to adjust the reacotr. Plus it gives a little more back pressure to the needle valve for a more precise dial in.
Glycerin can be found in any pharamcy for a couple of dollars for a small bottle.
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