Happy you found us, and welcome. Very pleased to see you have the TF-100.
. Yes, as you already know, well water can present some challenges. Just in case you haven't already seen some of the pages/links, here are some to refresh your memory:
Pool School - Metals in the Water and Metal Stains.
Once you've added chlorine to the water, it oxidizes nearly all the iron to ferric iron that then forms iron oxides. So now the approach is to physically remove these precipitates either through vacuum-to-waste, through sweeping to get to the filter (or to skimmer socks or batting material) and then you'll be left over with a smaller amount of iron in the water. At that point you can either use a metal sequestrant or physically remove it with something like Metal Free that tries to capture and precipitate more into the filter.
As for your readings above, here is what I would suggest:
- For a SWG, you need your CYA higher ASAP (70-78 ppm)
- While waiting for your CYA to increase, ensure you keep that FC higher here in our TC "blazing" sun to prevent an algae bloom. Always refer to the
Pool School - Chlorine / CYA Chart
- You didn't post CC specifically, but TC - FC = 1.5. That exceeds our recommended CC of <= .5. You may be on the verge of an algae situation already. I would suggest you bring your FC up higher than the normal (target) level for a couple days and retest. Perhaps do an
Pool School - Perform the Overnight FC Loss Test (OCLT), and ensure you are at SLAM level when you do the test. If you fail the OCLT, then you know you need to hold your FC at SLAM level until that CC goes down to <=.5.
I hope that helps give you a good direction forward. We're very happy to have you join us, and hope you have a great summer. If you have any more questions, please ask.