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Same pool size here, similar Jandy DEV48 filter, same issues :(

I'll run a SLAM starting Sunday. Just wanted to make sure there wasn't something else as a possibility that was causing FC to appear lower than it actually was. Looks like I'm good to go for swimming today and tomorrow. Much appreciated, everyone.

The two methods of testing are the TF-100 FC/CC/TC test with speed stir 870 powder, 871 drops, and 003 drops. I ran that test twice with the same results. Then I did the Basic daily Total Chlorine/pH kit where you fill each side with water up to the line, then do 5 drops in each side. Results...

Much appreciated. I will do a SLAM Sunday, but I guess what I'm asking about today is can I assume dropping ~23ppm in FC in a 19hr period with pretty much 0 CYA is a possibility? I've never saw that quick of a drop when I SLAM'd before, granted I typically keep around 50-60 CYA

14,000 gallon pool, added 3 pouches 73% shock yesterday afternoon around 5 in afternoon to get FC up to 25ppm. Prior to shock, FC was around 2ppm, pH 7.6. Just tested today at noon (~19hrs later) and my FC is back down to 2.5ppm and CC= 0.5ppm. My chlorine generator was off last night by...

Copy that, totally understand your viewpoint. I narrowed down the issue to the motor assembly and opened it up to find it filled with about a cup of water and the board all smoo'd up and corroded. Ordered a new motor assembly for $450 shipped and the other replacement parts for about $30 to...

Power unit turns on, but impeller or tracks don't move at all. Tracks and impeller move freely when I spin them by hand. I checked contacts in the blue swivel cord and they look fine. Last week it would turn on, rotate left and right, then go forward for about 20 minutes trying to climb the same...

Added recommended chemicals according to pool math, now reading as follows: Water Temp: 74 degrees pH: 7.6 FC: 1 ppm CC: 0.5 ppm TA: 110 Cal: 390 CYA: 50 Salt: 3400 (reading from Aqua Rite T15 digital readout) Readout lights on Aqua Rite are illuminated green for "generating" and Orange for...

Re-did CYA test, still didn't see black dot disappear. You were correct, it is below 10.

Thanks for the reply, for the acid, how do I know how much to add? Same question for CYA. Should I trust the salt Pool Math is telling me to add?

Hey all, we just had our pool opened yesterday and the heater is cranking, lol. They shocked the pool yesterday when they opened and said I need to wait 24-48hrs to swim. I haven't added anything yet, but here are my readings just now: ~14k gallon plaster/concrete pool Water Temp: 65 degrees pH...

I'm thinking it bumps the value at least 50k. In our area it's is almost impossible to put in a pool on the waterfront side of the house due to the required 100' critical zone restrictions. Consequently, there have only been a handful of waterfront houses with waterfront pools that have sold in...

Additional pics #3

Additional pics #2

Hey all, this is the follow up from a few weeks ago. I spoke to the person who has been servicing this pool since it was built 11 years ago and he said the plaster/coping/tile and the pool in general is in good condition, and that the next major replacement item would be the cover. Here are the...