Do you have a more detailed writeup about how you've set this up?

My primary device is a 2010 Comtech (good luck finding one). It's just a voltage multiplier off of 110VAC( https://en.wikipedia.org/wiki/Voltage_multiplier ). I bought 8 $5/ea Chinese 'neg ion modules' and tied then to the back of the fan... they are parts to build into a much weaker device for cars. They will last longer (because they're resin sealed) and safer (12VDC supply) but by comparative output measurement I will need an array of 36 to match the output of the 2010 device. At $5 ea, this is doable. There are single power supply units more capable but I like the idea of 36 separate waterproof replaceable 12VDC things.