The Puffer Forum

sorry for my ignorance, i am having delivered a new external filter in a few days, as the internal one is not sufficient. After reading some of the other posts i am a bit concerned.....

is it possible that the tank, which has been running for over nine months, could develop new tank syndrome when adding a new filter??

Just leave the old filter on, run the new one with it for a month or so and it will seed properly. Then if you so wish remove the other one or leave it on. The more filtration the better.

thank god for this site.....it would never had occurred to me otherwise!

many thanks