crackmonkey
Fish Crazy
I have a new Juwel 180 Litre waiting to be set-up, and a established 240 Litre. I heard that if you put the new Juwel filter in the established tank for a while the sponges will be quickly colonized with the bacteria needed. If I did this would I have to take the whole box juwel unit out and put it in my old tank or just take the sponges out and put them in, all of them or just certain ones? Or could I fill a bucket with water from my established tank and place a heater in there and just put the sponges in?