I've purchased a home with a pool. I have no expereince with pools and am trying to understand the chemistry as fast as possible.
The water looks fine, and as far as I can tell seems fine. However the test results have me confused as to whether I need to do anything. Specifically, the CYA is apparently very high and I'm not clear on what that hurts.
When I purchased the house, there was an Chlorine floater in the pool with two old pucks, and a new puck in the skimmer. I had a note on the door from the previous pool guy who stated he adjusted the chemicals and wanted to know if we wanted to continue with his service. I figure I'll give it a shot and see if I need any help later. However the more I look into it, check the baskets, and general status of the pool, I donlt think he was doing more than dropping a puck in teh skimmer eveyr week or two.
I purchased the suggeested K-2006 test kit and also had Leslies test the water. Here are the current results;
CYA <100 (in the test, I cannot even get close to the 100 line. A couple drops and the dot is gone)
As you can see the CYA is high, and my FC seems low for that level of CYA according to the charts here, if I understand correctly. However, I have been checking every day during the last two weeks (since owning) and the CC is unchanged. FC has gone from 4-7 when I added bleech once, one week after purchase. A week later and its only back to FC5 and CC still 0.
As I said, the water seems clear, the pool seems clean. The only item I can comment on is there are various spots on the plaster, but they don't seem to be alge, but I'm not sure. They don't rub off, and I'm wondering if its just the plaster showing its age. There is also a small amount of scale build up along the edge.
When I read the shock page, it seems like my FC is very low and I should be raising it significantly. However it does not seem to be changeing, and from what I can tell, I don't really have any issue, do I?
Do I need to urgently do anything? Lower CYA? Raise FC? Shock?