There is a way to use pool water chemistry to calculate pool water volume without using the traditional geometric calculations. The geometric formulas are fine for pools that are traditionally shaped. However, when pools do not fall into these convenient shapes, a chemical method can be used...
Tested 250 ml and my TA is 86. Added 5lbs of baking soda. Now to wait 3 hours and test again!
Good job! I went on there thinking............."A washer can't cost that much" and was got a BIG surprised! Just a plain washer was $4.35!!! Well it did have Pentair's name on it so.... At least the o-ring lube can be used!