Mps

Hello,

I am on my second year with my Intex 16'x48", and so far things have gone well. This year my wife decided to use MPS as a shock treatment. I know this will throw off chlorine readings and believe me it has. I was wondering if the MPS will disappear in a certain time frame so that I can get an accurate chlorine reading again, or do I need to purchase the test kit for it?

Thanks!