| Tewa said "First of all I just want to clarify something what do you mean by it will not work, ammonia and nitrite will not get converted? Nitrate will not get degassed? Organics will not be decayed or degassed? Or the koi will not grow? Or there is less appetite? Or there is less oxygen? Or the bakki showers alone produce a unfavourable environment for the kois health? Or the appearance of the koi suffers in terms of white on shiroji or the red on hi or the black on sumi."
It will not work because it will not take out of the pond what was put into the pond (feed). There has to be a mass balance.
Tewa said, "In the bakki system the nitrates and organics would be degassed an advantage over the submerge system"
You cannot degas nitrates and organics. They will not volatilize and go off into the atmosphere. Anaerobic denitrification will convert nitrate back to ammonia and a certain amount of ammonia will volatilize, depending on the pH. Note that anaerobic conditions are necessary for this to happen. When organic matter is consumed aerobically one of the primary waste products is carbon dioxide and carbon dioxide will come off as a gas. Since there is an equilibrium between carbon dioxide in the water and carbon dioxide in the atmosphere, excess carbon dioxide will leave the water whether or not a TT is used. It will probably happen equally effectively in a pond with a submerged filter.
Tewa said, "No one has run a bakki shower pond with the same fish load compared to a submerge system pond (same size, settlement chamber followed by biofiltration, same turnover rate lets say at 1.5times an hour) and measured the water parameters with the same amount of water change, except for mTTk and momotaro. What I am trying to get at is which system would produce the better water quality using the same amount of water change?"
I agree that is the comparison that needs to be done. Who is mTTk? Can you summarize what he/she found?
-steve hopkins |