I've been researching fish care in hopes of finding good filtration techniques. A few vets and experienced care-takers are stressing the need for good amounts of dissolved oxygen in the water. In the past, I generally assumed the oxygen in the water was strictly for fish that were living in the water. I'm finding it useful to know that the bacteria that live in established filters and breakdown solid waste also live off of oxygen in the water. Better aeration of aquarium water will also improve the growth of aquatic plants. This is why aeration of the water is so important.
With better water aeration, using things such as an airstone, filtration is greatly improved.
Thought I'd pass that on to those trying to improve their biological filtration and increase the time between filter cleanings.



