Thanks for the quick reply. DH will take this $75 test kit back then. If they don't have a FAS-DPD kit, then I will order it from Amazon or where ever it is ya'll get a little something on it. (I was just trying to get the pool ready for Mother's Day and a visit from grandkids #4, #5 and #6 but at this point will just be glad to have the pool again someday!)