Is Carbon Really Nessecary

i use a magnum 250, the magnums are pretty cool IMO..........

 

Can anyone recommend a good brand of carbon? I had used carbon when I first started up my tank, but later found out that I somehow had "freshwater only" carbon and haven't used any since.
Thanks...

 

I also use carbon and I agree with both CR and RS. I dont know if theres a way to "overdose" on carbon. As for when to change it, that really depends on your bio-load. For ex. I have alot of corals and fish, my carbon container says to change it every 4-6 months for normal conditions. I change mine every two months or so. Carbon is also used when your using ozone.

 

I saw a tv show the other day, I think it was modern marvels and the topic was activated carbon. Did you know activated carbon is what makes coffee decaffeinated! Here is the company where they did some of the filming Calgon Carbon Corporation: Resources
this is a good one all about carbon!!!

here's another

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it's their description of what it does. I looked on M.M. and didn't find the episode. very cool one to watch for though....

ps I like the carbon