EEG system for a float tank

btlbtl Tucson, AZ

I am trying to build an EEG system that can be used inside a float tank. This is a bit of a problem, since we are talking about a giant salt bath. I don't think I need the whole head -- just frontal electrodes will do. I like the look of the Ultracortex Mark IV with active dry electrodes, but it looks like the CytonDaisy board is built to go in the back of the head on that helmet, which would be underwater. Big no.
The other option I see is to use a normal fabric electrode cap, like I see in the Gelfree Electrode Cap kit, and then put a swim cap over that to try to ensure dryness. The lower profile of the passive electrodes gives me more flexibility, and I can place the CytonDaisy board farther away from the water.

What do you think? Any recommendations for me? Thanks

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