I use several household products to keep my reefs running and maintained. I'm wondering if there are things others use that I haven't thought of. Let's list things you use that don't come from a LFS and what you use them for. I'll start:
Bleach: To clean filter socks
Vinegar: To clean calcium and crud off of anything
Old toothbrushes: Scrubbing and cleaning
Mr. Clean Magic Erasers: Glass cleaning
Old towels: Never throw away an old towel
Baby bottle brush: Cleaning carbon/GFO reactor cartridges
Foam paint "brushes": Cleaning skimmer cups/throats
Bleach: To clean filter socks
Vinegar: To clean calcium and crud off of anything
Old toothbrushes: Scrubbing and cleaning
Mr. Clean Magic Erasers: Glass cleaning
Old towels: Never throw away an old towel
Baby bottle brush: Cleaning carbon/GFO reactor cartridges
Foam paint "brushes": Cleaning skimmer cups/throats