On Sat, 30 Dec 2006 15:55:46 -0000, "Jewlssss"
wrote:
I've just added (yesterday) an external to my 190L Jewel tanks. the tank
usually has, as well as the standard jewel corner filter, a fluval 4+
filter. At the moment they are all running, inc the external one.
Can I take out the fluval? Is there enough biological filter material in the
jewel one to keep the biological filter going whilst the external gets
established?

I would keep the old filter in for at least two weeks, to ensure that
the new filter has been properly colonized.

--
SEE YA !!!
Trygve Lillefosse
AKA - Malawi, The Fisher King