Hi
The other day I replaced two check valves on my pool system. My pool has an elevated spa , Solar roof heating panels and a regular gas heater. My system is approx 12 years old.
As I had not run the pump through the solar panels for at least 2 months , I thought it would be good to test the new check valves doing so.
As soon as the pump started to divert to the solar there were black clouds coming out of the pool return valves into the pool , and it lasted until all the water was flushed. These clouds quickly fell and stayed to the bottom of the pool and could be swept around with the pool brush.
In my pool vacuum I have all this black dirt which if rubbed between your fingers turns into an oily substance that stains your fingers.
My question is , what is this black stuff ? is it an algae ? Is it just some water sitting in the pipes for a few months ?
My pool chemistry is
The other day I replaced two check valves on my pool system. My pool has an elevated spa , Solar roof heating panels and a regular gas heater. My system is approx 12 years old.
As I had not run the pump through the solar panels for at least 2 months , I thought it would be good to test the new check valves doing so.
As soon as the pump started to divert to the solar there were black clouds coming out of the pool return valves into the pool , and it lasted until all the water was flushed. These clouds quickly fell and stayed to the bottom of the pool and could be swept around with the pool brush.
In my pool vacuum I have all this black dirt which if rubbed between your fingers turns into an oily substance that stains your fingers.
My question is , what is this black stuff ? is it an algae ? Is it just some water sitting in the pipes for a few months ?
My pool chemistry is
- FC - 3ppm
- PH - 7.6
- TA - 90ppm
- CH - 200
- CYA - 30 ppm
