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Modello

In many discussions on the internet I met the need / desire by many to create a model aquarium ecosystem. The inescapable conclusion of any discussion on this is that the system in question must take into account a large number of parameters that can not obtain a standard model.
As just one example of some of the parameters to be considered could include:
- fish: the number and species.
- Plants: The number and species.
- average temperature and average daily temperature range that is under the tub.
- various chemical parameters (pH, GH, KH, redox potential, etc. ..).
- the type of light, photoperiod, the emission spectra, the water column, the amount of suspended particles.
- existing biofilms, quantity and quality.
- the background material and if more than one relationship between materials, their condition.

Some of these parameters are very difficult to categorize and analyze (eg bacterial) except on equipment that go well beyond the typical test kits available to hobbyists.
This does not mean that we should be content with the usual patterns like the one on the nitrogen cycle with the steps simplified NH-> NO3-> NO2.

I tried getting information from various sources to sketch a basic template for the main rounds of the aquarium system and came out the following scheme that will surely be improved but that is also a good starting point ...



In the model have not declined in detail in the relations between the various fertilizers or in their interaction with different elements except in the case of iron (FE) that undergoes oxidation by oxygen and this tends to fall.

not evident from the scheme but there are two points where the model is open to external influences:
- feeding the fish: it works on the organic load
- changing the water: it changes the values \u200b\u200bof many of the chemical- physical (eg. trivially the water temperature when the addition is different)
The extension of the model would test materials for months without reaching a comprehensive model for cui in futuro applicherò migliorie al modello solo se le troverò molto significative per successive analisi.

by Rudi Giacomini Pilon