I am tackling my task of cleaning my tanks today!!! I am cleaning my 55 gallon, 10 gallon and 29 gallon. Who else is cleaning their tanks today? I have also figured out it takes 8 1/2 3 1/3 gallon bucks to fill my 55 gallon tank since I only do about a 80% WC once weekly. It takes 2 3 1/3 gallong buckets and 1 little bucket for my 10 gallon and idk about my 29 gallon. It's still cycling.