Acurel LLC Extreme Activated Carbon Pellets and Ammonia Away Green Blend, Aquarium and Pond Filter Accessory, 30-Ounce

I use this in my SW filter system and works well. I got some for the office FW tank and cleaned up the yellow tint in a day.

Fantastic value to buy this in bulk versus buying from local fish store (at least where I live)

Ammonia, nitrates and nitrites don't stand a chance!

For the price this is a good deal. Next time I am buying the largest one to make the cost savings even better.

good