Hi All, brand new here. I am someone who got a D in Chemistry in HS so please forgive me if I sound clueless. My husband and I recently moved into a house in Washington, DC with a pool with the following specs: 24K gal., white plaster, in ground/in door, sand filter, I have to get back to you on the size of pump and filter. Old house, old pool, original pump, filter, and heater. We’re talking circa ‘77.
We opened the pool with green algae and what not growing at the bottom. The local pool store told us to shock and chlorine the heck out of it. A couple of days later the water was blue and crystal clear with all the dead algae at the bottom. At the time, the pressure gauge indicates it's time to backwash and so before we even vacuumed the algae we began the process of backwashing. We followed the instructions to the tee but when we returned to filter mode, the jet stream started spewing cloudy murky water. The water is now blue and looks clean but very cloudy. We’ve been back and forth to the pool store and the water hasn't changed even after all the chemicals we've been advised to put in it.
Here's the most current reading taken 6/22/10 by the pool store:
pH - 8
TA - 110
FC - 5
TC - 5
CH - 460
CYA - 0 (we were told that since our pool is indoor the CYA doesn't matter, is this true?)
And here's the advice:
Add 3.5 pt muriatic acid, wait 15 minutes
then add 2.5 qt scale inhibitor
Thoughts??? BTW, thanks for this great website.