The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
I've used charcoal and Purigen.
Purigen is what I use everyday for my 36g. The only downside I've noticed is that after "recharging" it a half-dozen times, it needs to be recharged more often. It does last and definitely makes a difference.
I only use activated carbon after dosing the tank with medicine, or if the water offends my nose. I don't run it every day. Maybe once every other month or so?
That's my tank before the move...
And after...
I recommend reading the FAQ as some water conditioners are not compatible with Purigen.
They also recommend running carbon and Purigen together as they compliment one another.