Thanks Instar! Sounds like bio-conversion is a good thing. Is this the process of making more O2 available? How might I maximize this in the stream/waterfall design?
Bio-conversion is a naturally occurring bacterial process where Ammonia is converted into Nitrite, which in turn is converted into Nitrate which serves as nourishment for plants. It does not add Oxygen. In fact, Oxygen is required and used in the process. A stream will add more oxygen than its bio-conversion will use, so you WILL create an Oxygen excess.
A "bog" filter (though not truly a bog or a filter, more of a wetlands or marsh) is also very effective in maintaining acceptable water quality.
An aerator should be included as an integral part in your plans.
