When we went to the grocery store I picked up 4 boxes of washing soda which was $2.59 for 3 lbs. Then we went over and I seen baking soda and it was $2.49 and it was 4 lbs per box. I put the washing soda back on the shelf and got two boxes of the baking soda which was a mistake. We didn't use it and luckily we had some sodium carbonate ph + for the pool and used the dosage prescribed by DH1. I am taking the baking soda back and will get more ph+ for later use.
That is what I get for trying to be cheap and not realizing they are not the same thing LOL
The only reason I bought the PH+ was because I couldn't find washing soda anywhere.