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I'm shooting video of paint moving in mineral spirits. To make for a little more action, is there a household granular/solid I could add to the mineral spirits that would gently effervesce ala alka-seltzer in water?

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  • $\begingroup$ Are you looking for something that will effervesce in water or mineral spirits? $\endgroup$ – A.K. Jul 27 '18 at 2:33
  • $\begingroup$ Something that would effervesce in mineral spirits. $\endgroup$ – Dietmar Jul 27 '18 at 19:06
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A fish-tank bubbler with needle valve or regulator would not only provide bubbles but be controllable and would not need to be replenished, as would chemicals.

N.B. However you make bubbles in mineral spirits, it would help the highly-flammable liquid to evaporate, creating a potential explosion and fire hazard. You might get better images with less-miscible mineral or silicone oil, with less danger.

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  • $\begingroup$ Thanks for the reply. My thought is that a bubbler uses puffs, so it would mess with the effect, and the scale of what I'm doing is very small, a petri dish of spirits, so no hazard ;) $\endgroup$ – Dietmar Jul 27 '18 at 19:08
  • $\begingroup$ Those using motors do make noticeable puffs, but the vibrator type, especially through a fine stone, tend to make streams... which still might not meet your needs. Dry ice might work, if you could insulate it so that it doesn't sublime too rapidly. $\endgroup$ – DrMoishe Pippik Jul 27 '18 at 19:55

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