"Real sulfuric acid". I wasn't fooling around with these drains. The drains were flushed with water afterwards, moments after I got the jug out of the way. Didn't want any water to get into the acid! Order of operations matters.
I had about a couple inches of 93% sulfuric acid in the bottom of the big reagent bottle. Knew it would work and it did.
Of course no good deed goes unpunished. Replaced a valve flat washer seal in the shower valve. Seal didn't come out with the assembly. Had to create a wire pick to get over an inch into the valve. But all my stuff got moved. Scrounged in the garage and found a bent piece of steel wire that was hanging off a nail. Said scrounging in house and garage took a half hour. Shower valve was repaired. Got cocky and decided to replace the cold water faucet gasket. That was my downfall. No gasket came out with the valve. Can't see into this valve because it's below the tub line and because there's a little water weeping out. Fooled around with it and decided to just put it back together. However there's a seal that's torn, and it's not in my washer seal kit I just bought. Tomorrow I need to go to the hardware store to see if I can find the right part. The valve assembly is not working correctly. It leaks and if I tighten the outer nut so the leak stops, then the valve handle won't turn. This is in my bathroom shower, so I need to fix it for myself...
I did manage to paint the ceiling in a 12x13 room. The paint has poor hiding quality. I'll need to do it again. Put two coats on, it's better but I can see some of the less desirable features bleed through. Gosh, I dislike ceiling painting!
Just another day trying to get ready for an open house. I'll be glad to be done fixing things here. AC guys will be here tomorrow afternoon. Can't believe how much a recharge is, I consider it serious money, especially since I will only get to enjoy it for a week or two...