Thanks, BigDave.

I guess I just got a little impatient this afternoon, after having added yet another 1/4c of acid. This evening's test of TA did actually show a drop to 180, but still in the error range from the last test. May be a "can't see the forest for the trees" type of blindness. Thanks for the reminder of where I had come from. Maybe I should have started a spreadsheet to record all my test results?

Now if I could just figure out how to get the calcium down....Or am I OK with that at 250? Not sure what the saturation point would be where I would start to see scale on the ladder etc. I do note that there is some scale on the ladder legs at the waterline, from previous years use. I don't think it is from this fill.

Charlie