On Apr 22, 5:45 am, "Rich" wrote:

The answer hopefully is in C above. The "crap water" would have actually
been full of the micro organisms that convert ammonia to nitrite, and
nitrite to nitrate. This would have given a boost to your new filter.


Thanks, Rich.
I was under the impression that the bacteria in the filter would have
gone anaerobic by now as the oxygenated water wasn't running over it.
Glad to know that isn't the case...