I put in a 1/4 turn valve on the main , if I leave for more than a day
its off. At 5 gallons a minute in 3 days you could of had 21000 gallons
in your basement, yes twenty one thousand, I hope you have a sump, but
if that failed you would be swimming. There are auto main shutoffs or
get in the habit. Tanks should last the life of the system 20 years