I believe you should be able to use it, others have. But KOH is the best thing to use in this case, simply because once your solution is set at the concentration you want (amp wise) you very rarely have to redo the calibration as your electrolyzer consumes your Distilled Water....The KOH remains so you just need to replenish the water up to your original level....You should also use the water out of your Bubbler occasionally to refill your cell because you will recover your KOH that managed to make it that far. Using larger diameter tubing (3/8 or 1/2) to make those runs cuts that down because you wont have so much pressure being forced through that can carry the water vapors pretty easily. Remember PRESSURE IS NOT IMPORTANT! Volume is...The vehicle will suck what it wants through the larger tubing easier....Small tubing would restrict flow and cut your actual output down.

This is who I use...They are good people! Look under soapmaking supplies, then akalis I believe>>>
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Hope that helps!