On 17 Jan 2007 22:10:38 -0800, "JB" wrote:

I ahve the standard Whipser HOB filter and have been using the filters
with carbon.. I recently discovered a site that said you should remove
the carbon to keep beneficial bacteria going through the filter...

Is this true?

I have 3 ten gallon tanks with Whisper Jr. external filters. I quit
putting carbon in the bags over 3 years ago. I only change filter
bags when the water is running out the inlet.

I have never understood all of the precautions regarding bacteria.
When I change bags, I just pull out the old frame with its bag and
slide in a new one. I don't even turn the pump off. I then rinse off
the dirty bag and toss it with my other laundry.

Works for me.

I also have a 29 and a 75 gallon. They get similar treatment.