While preparing my tank before I go on vacation, I started thinking about what part of my tank would potentially be the first to cause an issue if left unattended. Everything in my tank is pretty much 100% automated, feeding, dosing, top offs - but I'd have to say it'd be my ATO system. I have a large enough reservoir for about 8 days of evaporation. Shortly after that my skimmer cup would overflow, and as I have a HOB skimmer it'd dump skimmate all over the inside of my stand.
How long could your tank last before something would go south?
How long could your tank last before something would go south?