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?
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html
"Carl Harrison" wrote in message
m...
Hi,

Can anyone tell me why a brand new sand filter that was added to
polish the water would increase the ammonia levels in a 3,000 gallon
pond. Prior to adding the sand filter the water quality was perfect.

Cheers