whiddett
Aquarium Advice Regular
Hi. I have 2 aquariums made by Juwel which come with the Juwel Filter system and sponges. I am told that it is very important to change the Carbon Sponge in this system every 4-6 weeks. However, I dont actually know what the Carbon sponge does and I have noticed people on this forum often tell people they dont need Carbon. Can anybody advise me on what the Carbon does and when it is or isnt needed? I'm getting concerned as to whether they are a waste of money or not as I have all ready been told that the Nitrate removal sponge is a waste of time and is pointless to replace.