What maintenance is required for the tank?
A solution of baking soda and water run through the pump will help remove offensive odors. Do this occasionally. After about 20 uses of the tank, I run a strong bleach water solution through my pump and slosh it on the walls of the tank using a course hand brush. After bleaching the tank and rinsing well, the next time I recharge the tank, I use a double amount of LCR (Liquid Chlorine Remover) .