[AquaticLife] Replacing internal filter
The sponge for washing dishes may not be suitable. It may not be closed-cell sponge and it may have some mildewcide added into the sponge during manufacturing.
The sponge that came with the filter, that you can see through the holes is called open-cell sponge so the water can flow through it. It’s more for catching big stuff and for having plenty of surface area for your N-bacteria.
I would simply add the floss pads or poly-fill into the carbon section as the second layer of mechanical/biological filtration. When cleaning, you can clean the floss/poly good but only rinse/squeeze the sponge in some removed tank water to clean it while keeping the majority of the N-bacteria alive in the sponge.
Lenny Vasbinder Fish Blog - http://GoldLenny.blogspot.com
Category: Philippines Internet Koi Society
