03-25-2011, 02:03 PM
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Originally Posted by 29Kilo29
Okay, the tank is cycled and has been going for a while so would going from cartridge to a sponge require any new work?
I have never used a sponge before
No. The great thing about sponges is you can cut them into any shape you want. I would put sponge pieces in the filter. I am familiar with your filter - put the cut sponges in front of the cartridge and the biomax (or whatever) behind it, so the water flows through the sponge first, then the cart., then the biomax. This is too much media for the filter, so dial back the flow rate. If some water is spilling out over the intake tube, that's okay - that's what it's there for :) After a few weeks you can remove the cartridge and replace it with sponge.
I don't use carbon in my tanks, so I forgot about that. If you want to use carbon, all you need to do is get a mesh media bag (get 2) and a container of carbon. Carbon goes in the media bag and in the filter. Then when you need to change the cartridge, swap it out for the other - it can be a pain getting the wet carbon out of the wet bag. I found it easier to empty the bag once it was dry, but that was back when I still used it.
Last edited by jaysee; 03-25-2011 at 02:07 PM..