Is there any way to test chlorine concentration at home?
Lately I thought I had a Stenner pump malfunction when my pool chlorine concentration dropped dramatically. After several tests, I have to conclude that my pump is fine and it's the chlorine in the holding tank, stored in my pool cabana that has been depleted.
It gets pretty hot in there (100F on hot sunny days), I'm in the process of insulating the pool cabana but had to stop due to a neck injury. I hope that insulation will help in preventing the afternoon heat build-up...
Am I correct in thinking that the depleted chlorine will have a tendency to "float" above newly added chlorine in the tank so that the pump, who draws the liquid from the bottom, is always using the fresher chlorine first and if I let the level drop a bit (not to the point of running out though), that I may end up using the 5% chlorine and that's when I think my pump is failing to add chlorine in the pool?
I'm currently using a timer to drive the Stenner pump but I plan to add an ORP sensor connected to a computer (a file server in the basement) to drive the pump so that it will automatically use more chlorine if needed.