koliveira;784001; said:Yeah, like the blood filter for dyalisis machines that changes color with contaminents, copper ect?? Or are you looking for the 100micron poly cloth.
Yes similar I think. In the UK it comes in a green box with an ammonite on the front. I use for my reef tanks and Tigrinus. It is brilliant for removing contaminants from the system and not releasing it back into the tank