Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Nitrifying bacteria do not grow fast enough to cloud the water.
Heterotrophic bacteria do, and can cloud the water whenever there is a disturbance. They usually eat whatever food got kicked up, then die back to reasonable (non-cloudy water) levels within a week.
I am also concerned about the 'neutral regulator'. Monkeying around with the pH can also cause cloudy water.
I just use dechlorinator, and add the right minerals (if needed) to keep the GH correct for the livestock. The pH is actually about in 4th place as far as importance. So unimportant that I do not usually do anything about it.