My friend/neighbor has an IG pool with the following details (He currently has a pool service - I'll be working on convincing him to use the TFPC method):
18,000 Gallons with waterfall
DE Filter (I think Hayward)
Jandy Stealth Pump (I know it has two speeds, not sure any other details)
Second pump for cleaner
Filled from community well
He asked us to house sit while they went away on a 2 week vacation and told us to feel free to use the pool. There were some issues with his DE filter (30 PSI with huge load on the pump) and the water was getting cloudy so I physically cleaned the filter and replaced with 6 lbs of DE as indicated on the side of the filter. Since I'm having one built and need to learn the TFPC method I figured I'd try testing his water (I have a Taylor K-2006 test kit). Here are the results
FC - 0
CC - 0
pH - 8
TA - 200
CH - 380
CYA - Off the chart - I can only put about an inch of water in the tube when I lose sight of the dot
I've been reading and I assume CYA is so high because he uses chlorine tabs - I'll try to talk him into bleach when he gets back.
So is the first step here a partial drain/refill and recheck for CYA? Can I check for CYA immediately or do I need to wait some length of time before I check (with my rapidly dwindling reagent supply - I've already ordered the 16 oz refill from Amazon!)? Also, I've read that there may be some usefulness to filling at the bottom and draining from the top due to the differences in water temperature - does that sound right (cold stays at the bottom and hot stays on top)? His pool water has to be above 90 here in the Hill Country with all the heat we've had and the well water is easily ~75 degrees.
With that information, do you think I'm on track or have any other recommendations? I'm thinking:
- Get CYA levels fixed (30-50 ppm)
- Adjust PH to 7.2 and let it rise back up to 7.8
- Deal with the TA
- Fix the CH
What do you think? Thanks for reading and any suggestions you have!