I couldn't resist finding out for myself the effect of an ultra-sonic jewelery cleaner on the steeping process so I went out to a local B&M that does short-order mixing and got a PG/VG of 20/80. The liquid was darker in color on the top and faded to nearly clear at the bottom. You could look through the bottle and it was sort of like looking at a paved road on the horizon during the summer heat. You could see the light refract through the different layers and currents of ingredients. So, I put the 10mL plastic bottle in the middle of my cheap $30.00 ultra-sonic cleaner and added hot tap water but not so much the the e-liquid bottle would float. Ran the device for six minutes and voilà! Smooth, even color with no apparent refraction when peering through the bottle. Tasted steeped to me. Any others here negate steep time with devices?