Hello Roberto:
Yes exactly - not all bacteria will live in a SW tank and just because you add a bacteria does not mean it will live and multiple.
A drastic increase in aerobic bacteria may not effect the anaerobic zone at all. However, it the increase is so large that the oxygen content of the water above (around) the anaerobic zone decreases one might see the anaerobic zone increase in size.
A pathogenic bacteria population might increase with more carbon but that does not mean it is more pathogenic. The environment can play a role how on 'bad' a bacterium is. For example, water temperature can cause a bacterium to become very harmful.
As for probiotics - there are a few companies claiming to have probiotic products but these companies are selling junk. Probiotics are real and may work but no one to my knowledge is producing a product that works in marine aquaria.
Cheers,
Timothy
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Colocada por Roberto Pacheco
So just to make sure I get what your saying is that a SW environment is not conducive to all bacteria and just because you add it doesn't mean it'll grow and thrive in that environment ? How will a drastic increase in bacteria affect the anaerobic zone ? Is it possible that by adding a carbon source some pathogenic bacteria can grow exponentially and cause an imbalance and severe harm to corals ? Have you ever heard of adding probiotics to marine tanks ?
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