Great activated carbon By Fishbulb on 12/5/2009
Fishbulb would recommend this product to a friend
I have used this activated carbon for years. I use it predominately in my freshwater aquarium (which has much greater discoloration due to lack of skimming ect) and it works great. I recommend the finer grain if you have a phosban reactor since it has a higher surface area. My experience with this carbon makes me excited to try their ROX carbon next.