Switching from Baquacil to Chlorine
Friday, May 27, 2011
As of 7 p.m. our pool has a cloudy bluish color (can not see the bottom in the shallow end), along with some floating matter and a smell of chlorine (from the dead junk still in the water?). However, not as bad as I originally expected, especially after only one 10 gallon dose of sodium hypochlorite (6%). Throughout the day today I did brush the sides and bottom of the pool – but I have NOT added any other additives! The test results for this evening are as follows:

Water temp = 68 degrees
FC = 20 ppm
CC = 10 ppm
pH = 7.0 (low)
TA = 50 ppm
CH = 40 ppm

My best guess would be to raise the pH level first by adding 2.0 – 2.2 lbs of Sodium Carbonate (Borax), via a sock in the strainer. However, I not sure if the high CC level should be addressed as well? The TA & CH could be increased once the pH has been raised.

A secondary question, is it possible that with a FC = 20ppm (24 hrs after the first dosage) has our pool for the most part already completed the transition from Baquacil to chlorine? From what I have read, this seems unlikely to me? But if this is fact true, when should we consider changing the filter sand, etc.?

In advance – “thank you” for taking your time to read and answer my concerns!
Gene
PS – A Great Weekend to everyone & and please take time on Memorial Day to remember all of our military – Past & Present!
PSS – I have some progress pictures of our pool, but not yet allowed to post any attachments. However, I could send them to you privately if anyone is interested?