lately i've been doing frequent water changes and making 20-25 gal per week. but more of the problem is getting to the store. sure, going to the store and looking at fish is fun, but the hours on the LFS leave it hard for me to get the consistently. so, it is not good to be dependant on being able to drive to get water, bi weekly or so. i have been working at least 10 - 10+, 6 days a week with my one "day off" i am volunteering during LFS time. so, yeah, buying LFS water, much less water that is 45 min away (each way) to save $0.10 - $0.20 is a bit on the silly side.
PS: i'm actually more of the put popcorn in the microwave, wander off, and come back 3 hours later with "why am i hungry, i made popcorn".
Youre gonna need an autoshutoff valve...