I've been reading and learning a lot here already, and I've really enjoyed your discussion board.
I've had my pool for about 6 months. I had a bit of trouble getting the salt levels and SWG sorted out to begin with, but finally that seems to be working ok. Things seemed to roll along ok for a while, although I was adding acid, probably not regularly enough. Then I got to where my chlorine levels dropped, and I couldn't get them back up with the SWG. I supplemented with tablet chlorine and ran the pump longer, and it would come up but then drop down again.
I bought a taylor k-2006 test kit about a week ago. I've added a lot of CYA. The chlorine seems to be holding well now. I am surprised by how much acid I'm actually using now that I'm more closely monitoring and measuring. I'm also running my SWG at 50%. So, I want to talk about my water balance and acid usage. Also from what I've read, CO2 off gassing is an issue. I want to discuss this in context to my large rock water fall, flagstone stepped spillover spa and other water features.
My latest numbers:
CYA 55 (plus I added 2 pounds yesterday)
Salt - it's been 3100-3300 hundred but today with rain this week, it's low 2900-3000
pool temp has been about 89 in the late afternoon, outside of all the clouds and rain last week.
In the last 7 days I added 1 gal 1pt of acid. It rained heavily two days, and one day the waterfall got a lot of use.
So my question is first on chlorine, I assume based upon what I've read that I'll shoot for 70-80 on CYA and see what this does for my 50% output on the SWG. I suspect lowering that may improve my acid use. I'll just see what that does, and if it's not a good idea, rain and splash out here will probably bring it down soon enough. What ever there was at start up in January was completely gone just a couple of weeks ago.
I've read that lowering my alkalinity will help. Well, how low is low? What about the PH? What about CH? What should I be targeting here? What impact does my waterfall have on all this? If I'm constantly fighting a rising PH, and I'm also running that big waterfall shouldn't I continue to expect to fight falling alkalinity as well? It's dropped from 110 to 90 in the last week with rain and one good day of running the waterfall.