This works well. When I was adding more fish and QTing I used aquaclear 110 hobs and always had a couple of sponges in the sump ready to go.1. Get a block of sponge
2. Give it to a friend to keep in their sump
3. When you setup your tank, throw the sponge in your sump
Done.
This is what we do to setup quarantine tanks and instantly have ammonia processing online. As usual, the internet takes something simple and turns it into a complicated mess.
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