Okay. So. This isn't really betta-related but this was the best place I could put this. Alrighty. So where my parents live there's super hard water. It's well water. I did just upgrade their ten year old filter with a horrid filter within that's nearly as old, and so now I'm focusing on their...

Sounds similar to the Hot water & Cold windshield rule right? It's because it's the same rule. Unfortunately I wasn't thinking today while I was trying to start my second round of cleaning by boiling for the residue ridden 5 gallon. The apartment has been cold all day and I didn't stop to think...