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.
What does this stuff do? It says it removes ammonia but does it do it chemically or by providing the bacteria a good place to live. AC also makes the amrid media so my guess is the latter.
it shouldn't go bad as far as i know unless you use it in the filter. only after that it goes bad after 1 month. one more thing to keep in mind is that IMO, carbon is a waste of money unless you're removing medication.