Posted: Wed Aug 30, 2006 12:56 pm
How big is the tank and how much water do you have in it? Do you have gravel/small pebbles on the bottom? Do you have a filter and if so, do you use carbon in your filter? How warm has the weather been where you are?
I've found that smaller tanks (like 10, 20 gallons) seem to develop a "smell" rather quickly if they're not cleaned and water changed regularly (and more frequently than larger tanks). If you have gravel/small pebbles on the bottom, poop and debris is likely to get trapped, which will cause a smell unless cleaned really well (and to me a faint smells remains even then). An inadequate filter/no filter will just add to the problem, as will really warm weather (the warm temp can make whatever debris is in the tank smell more). Using carbon in the filter can help control odor, but only for so long and is not a substitute for a good cleaning and water change.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-