Circulation pumps vs. Filter

[DUHK]

If we use one of those powerhead circulation pumps and we have cycled our tank and provide plants, do we still need to use a filter?

If filters provide beneficial bacteria to break down compounds in your tank that are harmful, if we are able to supply that through a cycled tank and plants can we just use the circulation pump and scrap the filter? Or do we still need it?

[Somefishguy]

Perhaps you could add a sponge to the powerhead for bacteria to colonize.


I think it should be possible, but you would need a well planted tank, and best not overstock it either.

[wesleydnunder]

Perhaps you could add a sponge to the powerhead for bacteria to colonize.


I think it should be possible, but you would need a well planted tank, and best not overstock it either.

+1

Not a scenario that inspires warm fuzzies for me. I always filter my tanks, planted or not. In fact, most of my tanks have at least two filters.

Mark

[geoff_tropheus]

The filters provide mechanical filtratrion that water circulation will not provide.

Most of your bacteria colony lives on the glass anyway, and half that dies or gets exposed during water changes along the glass.

So, I wouldnt do it if I got fish in there.