Maybe you should read more recent sccience. In 1995 science was sure they knew what bacteria was at work re nitrogen in aquariums. And then along came Dr, Hovanec et. al.
10- tanks- its nice that you believe what you write so htere is what I suggest we do as an experiment. I am building a giant new public aquarium. The smallest tank will be 100,000 gallons and there will be more that are smaller, a two 50,000 gallon and 4 at 25,00 gallons and lots of smaller ones of a few 1,000 which total another gallons. These tanks will all be fully stocked, not overstocked, and there will be a total of 450,000 gallons.
Now please tell me how you plan to keep all of these tanks healthy. It takes a lot of water to fill the tanks and we have no place to dispose of 10s,000s of gallons every few days.
Now I would hate to turn you into a fish murder so let me help you here.
How the Georgia Aquarium Works
The Georgia Aquarium is the largest aquarium in the world, whether you're measuring by the number of fish (more than 100,000) or the volume of water (more than a million cubic feet). It houses about 500 species in 60 habitats with 12,000 square feet of viewing windows, and it cost $290 million to build........
Even though the Georgia Aquarium's tanks hold 8 million gallons of water, the facility uses only as much water as an average supermarket.
A treatment and reclamation system cleans and recycles the water, losing only a little to evaporation and the protein skimmers that help remove debris.
Behind the scenes, the aquarium uses three types of filtration:
- Mechanical filtration, which removes fine particulates
- Fractionation, which removes dissolved organic materials
- Ozone, which plays the same role as chlorine in a swimming pool but is safer for fish
It takes 218 pumps, 141 sand filters and 70 protein skimmers to do this for the whole aquarium. These pumps move 261,000 gallons of water per minute -- that's about 163,125 toilet flushes. Ocean Voyager alone requires 28 pumps and 56 sand filters, which clean about 1,800 gallons of water per minute. The life support staff must perform maintenance, including oil changes and filter changes, on all of these pumps and filters.........
Even though the system is almost 100 percent self-sustaining, the staff still takes samples from every exhibit every day, analyzes them in a lab, and adds any necessary chemicals by hand. Water chemists evaluate the
nitrogen cycle -- the breakdown of organic material into nitrogenous wastes -- as well as ammonia levels, pH, salinity and oxygen in water samples from every habitat every day. An ion photography system measures, dilutes and analyzes samples, recording anything that is positively or negatively charged. The staff also uses a
high performance liquid chromatography system for research-based applications.
It is too bad you do not believe in the nitrogen cycle. That is you right. But that also doesn't mean it doesn't exist or that it actually at work in not old huge aquariums but also the ones most of us keep in our homes.
For those of us who do believe in science consider this from
https/bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/17:_Ecology/17.02:_Cycles_of_Matter_in_the_Biosphere/17.2B:_Nitrogen_Cycle
"All life requires nitrogen-compounds, e.g., proteins and nucleic acids. Air, which is 79% nitrogen gas (N2), is the major reservoir of nitrogen. But most organisms cannot use nitrogen in this form. Plants must secure their nitrogen in "fixed" form, i.e., incorporated in compounds such as: nitrate ions (NO3−), ammonium ions (NH4+) and urea (NH2)2CO. Animals secure their nitrogen (and all other) compounds from plants (or animals that have fed on plants)......
Four processes participate in the cycling of nitrogen through the biosphere: (1) nitrogen fixation, (2) decay, (3) nitrification, and (4) denitrification. Microorganisms play major roles in all four of these.
Nitrogen Fixation
The nitrogen molecule (N2) is quite inert. To break it apart so that its atoms can combine with other atoms requires the input of substantial amounts of energy. Three processes are responsible for most of the nitrogen fixation in the biosphere:
- atmospheric fixation by lightning
- biological fixation by certain microbes alone or in a symbiotic relationship with some plants and animals
- industrial fixation
Biological Fixation
The ability to fix nitrogen is found only in certain bacteria and archaea.
- Some live in a symbiotic relationship with plants of the legume family (e.g., soybeans, alfalfa).
- Some establish symbiotic relationships with plants other than legumes (e.g., alders).
- Some establish symbiotic relationships with animals, e.g., termites and "shipworms" (wood-eating bivalves).
- Some nitrogen-fixing bacteria live free in the soil.
- Nitrogen-fixing cyanobacteria are essential to maintaining the fertility of semi-aquatic environments like rice paddies.
Biological nitrogen fixation requires a complex set of enzymes and a huge expenditure of ATP. Although the first stable product of the process is ammonia, this is quickly incorporated into protein and other organic nitrogen compounds."
If we remove the microorganisms from the process, there would be very little life on the planet.
And then lets wonder what happens if 10-tanks has a heart attack and is out of comission for a number of weeks. When I had my bypass surgery it was over 2 months before I could do anything serious in my tanks, I was lucky I was able to have a couple of the member of my fish club volunteer to come and do my water changes. But, where I do them weekly, these folks could only come every two weeks.