According to Tom's Non CO2 Method article, using mineralized soil, peat, or leonardite under the gravel provides a source of carbon for the bacteria living in the gravel which in turn allows the bacteria to use up oxygen in the gravel, thus allowing better transfer of nutrients to the roots (hope I understood that right
).
The question I have is what happens when the carbon source runs out? Does anything else in the tank eventually start to supply the bacteria with carbon? For example does all the "crap" that accumulates eventually in the gravel take over this role of being a carbon donor?
Thanks,
Harry
The question I have is what happens when the carbon source runs out? Does anything else in the tank eventually start to supply the bacteria with carbon? For example does all the "crap" that accumulates eventually in the gravel take over this role of being a carbon donor?
Thanks,
Harry