Is it possible to get an accurate chlorine and PH reading in a closed pool with a mesh cover that lets rainwater into the pool? If so, what do I use to collect the water sample and how do I collect the water sample so I'm only getting water that is near the bottom of the pool instead of getting surface water that could be mainly rain water with little to no chlorine?
The reason that I want to test my chlorine level is because I just got a bill for my pool closing and was charged an additional $50 for chlorine and algaecide. I told my pool company that I would add chemicals myself before closing so I'd like to see if they added any chemicals or if they are just charging me for them. If they added chlorine, I assume that I will see that the chlorine level is above SLAM level now. If they added polyquat, I know from experience that the PH will go up after it is added and the water sample will turn purple.
The reason that I want to test my chlorine level is because I just got a bill for my pool closing and was charged an additional $50 for chlorine and algaecide. I told my pool company that I would add chemicals myself before closing so I'd like to see if they added any chemicals or if they are just charging me for them. If they added chlorine, I assume that I will see that the chlorine level is above SLAM level now. If they added polyquat, I know from experience that the PH will go up after it is added and the water sample will turn purple.