Recent content by tcfarley

Kind thanks for the insight and pointers, Allen. You were spot on!... I remeasured my TA just now, this time being meticulous with my technique. Sure enough, my reading this time was 10ppm lower. When I got the speedstir years ago, the drop tests kinda became like a contest -- "Look how fast...

I have the TFP standard solution for Total Alkalinity 100ppm, along with new TA reagents R-0007, R-0008 and R-0009 and a new test cylinder. When I do the TA test with the standard solution (2 drops R-0007, 5 drops R-0008, and then counting the drops of R-0009), I get a TA measurement of 110ppm...

@BDavis466: Forgive me for reviving this old thread, but I'm interested in your idea of plumbing the IntelliChem flow-cell return to the pump basket... Do you mean remove the threaded drain plug from the pump basket and somehow install the flow-cell return there? I love the idea of that, but...

@chiefwej -- Thanks again for your insight. Looks like you nailed it. I do, indeed, have copper underground. I called Pentair to ask what recommendations they have for owners of their MA-feeding systems with copper plumbing. They said, "Um, we don't recommend these systems if there's copper...

Thank you, chiefwej. That sounds plausible to me. The acid is injected into the system just before the SWG and only 8 ft before the PVC ends and the original plumbing begins. I need to confirm that it's copper and not galvanized. If copper, then I guess I'll look at alternate paths to the...

9+ months. Fired it up the first of August last year.

Minor update: I measured the copper in our municipal fill water... just 0.1 ppm. Recap: - Current copper level in the pool is over 3 ppm. White plaster now a turquoise color throughout the pool. Pool light bezel has turned bronze. - No heater. No algeacides used in past 24 months. 0.1ppm copper...

Really? Darn. I thought we had it. The only products I've knowingly put in the pool have been muriatic acid, salt, baking soda, CYA, and liquid chlorine. How much copper exposure would it take to produce a 3+ ppm concentration in 22K gal of water? If (hypothetically) I were to drop an old...

Thanks, gang, for picking up the thread so quickly. I have an update! Funny how, after pondering this situation for weeks, the culprit occurred to me while I was driving in the car not 20 mins after posting here. :-P About 10 months ago, I *ingeniusly* repurposed the old port where I used to...

This is my first post after four years on the sidelines benefitting from the wonderful advice and camaraderie of the TFP community. So here's a long overdue thanks for all of that! Here's what prompted me to post today: Our backyard swimming pool is looking like a crystal clear version of Lake...