Thread: Internal Filter for Goldfish
View Single Post
  #22  
Old March 17th 06, 01:07 PM posted to rec.aquaria.freshwater.goldfish
netDenizen
external usenet poster
  
Posts: n/a
Default Internal Filter for Goldfish
wrote:

internal filters do not properly aerate the biobugs and lead to anaerobic conditions.
they are not easy to clean, not like slipping the whisper filter bag and sponge out,
rinse it off and put it back.

I'd consider the internal foam filters equivalent to the "classic"
biofilter - the undergravel filter. Advantages of the foam would be
EASIER cleaning w.r.t. under gravel (remove from tank, squeeze out in a
bucket of tank water, replace in tank), if you run two of them they can
be individually replaced, and they can be broken in on an established
aquarium then placed on a new tank to avoid the "cycle".

Aeration of the biobugs occurs through flow of fresh tank water. The
only "better" aerated media would be Bio-wheel or other wet-dry types,
as mentioned by another poster.