The Clorox I am using is sold at Costco in a box of Three 3.78 qt (121 fl oz) . The box states "NOW CONCENTRATED 3 x 121oz = 3 x 182 oz. Sodium Hypochloride 8.25%". I did fill up what I had drained and started the pump yesterday. This morning it is raining very heavily. Thank you so much for your suggestions. When it stops raining I will purchase a better test kit and put them to use. Frustrated in Texas.