Kim this ones for you or anyone else who uses washing soda!
Another source for this is the swimming pool/hot tub industry. "Washing soda" AKA sodium carbonate AKA soda ash is sold as ph up/ph increaser. Definately wont have any soap in it and has no odor. Walmart/CTire have it this time of year - s/b $2-3 per kg.
Jim
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