Quote Originally Posted by mary jo View Post
... FC level went from 13 to 8 over the evening ...
During the party?


I hope your mom's OK.

Are using the 25ml sample for FAS-DPD testing? You can save alot of reagent by using a 10ml sample and multiplying drop count by 0.5ppm. If one scoop turns the sample pink, you don't need two.

Not that I'm an expert, but... You can use the patented CarlD shot glass dilution metod of chlorine testing to get a start this weekend. Mix 5 shot glasses of distilled water with one shot glass of pool water then test the mix for chlorine and multiply by 6. Not accurate enough to know when your done but good enough to start the shock process.