So, it's been three weeks that we've had the house, and life with an indoor pool is fantastic. We vacuumed for the first time last night, as there were some specks on the bottom of the pool from a backwashing fiasco (more on that in a minute).
Numbers are looking great - FC started out near 10 (guessing the former owner dosed the pool just before we took over, in case we didn't get on it right away), and now we're running:
FC - 3 to 4 (easily maintained, only changes when somebody swims)
CC - 0 (some days not even a hint of pink)
CYA - 0
pH - 7.6 (rock solid - almost too solid, I'd like to bring the TA down with acid over time, rather than all at once)
TA ~ 220 (high, yes)
CH ~ 200
Temperature - 79 to 81 degrees
CSI ~ 0.4
On the CYA front, the previous owner left us a bucket of dichlor - would it make sense to slowly add CYA by using the dichlor instead of bleach, until I hit about 20? It's not even worth testing right now, it's so low.
We keep the pool covered when not swimming, and it really helps keep the humidity in the room down. No issues with fogging windows except for a particularly boisterous swim occasion so far. Air temperature around 82 when swimming.
As for the backwash incident, the backwash line and the floor drains run out to the back of our property, and I think the end of the line is covered by a fallen tree. An attempt at backwashing resulted in the floor drains turning into fountains... they do drain, but not quickly enough - not ideal. I have acquired some tracer dye, and I will use it to find the (assumed to be) buried pipe outlet.
And finally - pictures of the pool in its nighttime glory - uncovered and illuminated. I tried to take some underwater pictures, but they didn't work well with the lighting.