Our reader Frank asked:Can you tell me where I can find some good old fashioned "washing soda" and also known as sodium carbonate?I usually buy Arm & Hammer Washing Soda
at Meijer. Most grocery stores should carry it. You can also look at your local pool supply company. Look for Ph increaser and you should be able to find a brand that is 100% sodium carbonate. Sometimes sodium carbonate is called Soda Ash.
