I have a 200 gallon indoor turtle pond. On ocassion, it will stink up my house for a few days. Aside from a water change, which is do-able but a pain in the neck, how else can I eliminate it? Are those expensive water treatments, like "TLC" for ponds or "Turtle Clear" worth the money? I do a regularly scheduled water change once a quarter; of course, the pond is equipped with a powerful filter pump. Thanx!



