How do I use Ammo-carb in my fish tank?? Do I just put it in the tank or in the

[Destiny]

filter........?
grey cat, not a very good answer......maybe a little more detail and reasoning in your answer would help............I'm not positive at the moment if I have an ammonia problem but will check when i get home, I thought ammo-carb was just a precaution against bad stuff in my tank.........please advise