I'm stumped. Last month I did a clean and soak in the tub with Oxyclean, and it actually sat for days! I had no issues at all. Last night, I did another clean and soak, and this afternoon, they're all gritty. I've learned that Oxy has a tendency with hard water to do this, but I'm really scratching my head as to why this didn't happen before.
Would the days-long soak cause the grit to go away??? I don't get it why this time vs. last time.
I need to bottle tomorrow, and I'm going to drain, refill and add Starsan. Any suggestions for HOW much Starsan to had to a bathtub full??? 8oz?