Hi Everyone! I live in central New Jersey and have a 29000 gal. in-ground plaster pool (came with the house), Hayward Pro Grid DE filter (48 sq ft), Hayward Superpump II (1 hp), and in-line CMP chlorinator. I've been "winging it" for 7 years now (by "winging it" I mean, get the water tested at the pool store, buy what they tell me to buy, and add what they tell me to add ). I'm looking forward to actually learning the in's and out's of pool chemestry and I just happened to stumble across this forum.
Here's my latest test results (from the pool store):
FC = 3.4
TC = 3.4
PH = 8.2
TA = 126
CH = 195
CYA = 52
Seems like I'm doing OK. According to the Chlorine/CYA chart, I should get my FC to a minimum of 4 (ideally 6). Also, it looks like I'm on the borderline of calcium scaling, but the water is crystal clear (so signs of cloudiness). The PH is a little alkaline, but the people at the pool store said not to do anything and that the PH will come down on it's own over time. (To their credit, they didn't try to sell me anything and told me to just go enjoy the pool ).
I was shocked to read about the CYA/Chlorine relationship. So, I shut down the in-line chlorinator (tri-chlor pucks) and I've been using bleach (32 fl. oz. / day).
I just want to say that this forum is GREAT! The information here is just what I've been looking for all these years. Getting any information let alone correct information has been very difficult. The Pool Calculator application is just awesome, and so are all the charts and tables. Pool School is awesome too! Thank you everyone for this site! Hopefully, over time, I can become a contributor as well.