First, thank you for the Pool School. Reading it and the posts, I am developing a basic understanding of some aspects of pool care.
I purchased a home with a pool (my first) in September 2008. The seller gave me a tutorial on the pool, including a recommendation to keep the 3" tabs in the feeder and add a scoop of dichlor once a week to "shock" it.
So as you can imagine, when I had the water tested this spring, the CYA was through the roof (maybe 200). After a series of drain/fill cycles, CYA is better. (The puck feeder is now off and the dichlor is no longer in use!)
Water is crystal clear!
Here are my current readings (per my local Leslie's since I just ordered a TF-100).
pH - 7.5
FC - 3.0
TC - 3.5
TA - 60
CH - 90-100
CYA - 50
TDS - 325
Using the Pool Calculator:
CSI = -0.81
If I understand correctly, this is a potential problem for a plaster pool.
I have several questions:
1. Do I trust the numbers from Leslie's, or wait until my TF-100 arrives to test myself and correlate with Leslie's?
2. How urgent is getting the CSI in line? Is the pool wall being damaged?
3. What's the recommended approach and targets for adjusting my TA and CH to bring CSI in line?
4. Where is the best location to buy calcium chloride or calcium chloride dihydrate and which is preferred?
5. Is TDS important? Leslie's measures it, but I haven't noticed it on the TFP posts.
Thank you in advance for your help!