And, is the old filter still running? Pressure filters eat up buffer,
perhaps your buffering (KH) is down causing a pH crash and this would cause
ammonia not to be process by the bacteria in your old filter. ~ jan

On Sun, 30 May 2004 01:37:42 GMT, "RichToyBox" wrote:

The sand filter should not have any effect on the ammonia when new, and as
it grunges up, should help to lower ammonia and nitrites. Did you have a
spawn or a significant power outage that caused the high ammonia?

(Do you know where your water quality is?)