Joke dirt, this is completely a wild-arsed-guess, but since your pool is indoors, I'm going to hazzard a guess that you have a water softener?
If so, one thing that might be exacerbating your foaming issue is your low calcium level. Now, my pool is vinyl, out doors, and I don't worry about calcium, nor do i get foam...but ive got all that sunlight and air oxidizing it

But my hot tub, that also gets filled with softened water, needs a good dose of calcium (eg 150) to prevent foaming (its older, and does not have ozone, which also reduces foam.)
So while you do need to get your ccs oxidized and under .5 (technically, if you don't lose chlorine overnight you might be there now) you MAY also wish to bring the calcium up to harden the water a little as a future anti-foam proposition.
I'm also a little concerned that your water is completely unstabilized. I know that you're indoors, but have a hunch you still need a bit of cya to mitigate/reserve some of the chlorine.
You might also want to try some of those scum-collecting floating balls the use for sunscreen, etc.