u/Wordsman996

[Thought I’d posted earlier but cannot find it.]

Visiting Chicago late next month but staying in Hyde Park - not my choice - which is quite the haul for just about any brewery I care to visit.

I’ll have one day to move around a bit, but would like to know if there are any great breweries, taprooms, beer bars nearby.

(Image: Hop Butcher Grid Pale Ale from August ‘25 visit.)

Looking for the "Pool Professors" of Reddit.
I’ve spent the last two years trying to keep this new plaster looking clean. We did an acid wash last year to clear up these exact spots, but they’ve returned with a vengeance and are spreading.
If it was just "mottling," would it grow like this? Or is my chemistry/equipment leaching something into the water?
Help me figure this out so I don't waste another few grand on a "fix" that doesn't last.