as long as you enjoy changing water and vacuuming, go for it! 10-20% water changes every 2 weeks or so should be sufficient, but it depends on how big the tank is and how many fish you have, too....a 10 gallon tank can get pretty crappy in a short period of time, but an 80 gallon will be more forgiving......once the newness of doing tank maintenance wears off, you'll find a schedule that works well for you and your fish...2 or 3 times a week would be way more work than I'd want to do!!