Review on Seachem Purigen 100 ml Aquarium Fish Tank Filter Media - Ultimate Filtration Bag by Clare Thoms

I have used 2 packs of Purigen in my CF500 aquatope on my 110T and I have never seen my aquarium water so clean, even with driftwood in the tank. no more yellowing in the water due to tanning agents. Make sure you know your filter's flow rate and set the purifier so that the water in the filter is the last thing it contacts before returning to the tank. In my filter style, this means placing it on the top shelf of the filter canister. I have a coarse pad with a thin pad on top and biobeads in the first tray, another thin pad and ceramic rings in the second tray, another thin pad and a large bag of activated charcoal and zeolite in the third tray, and a thin pad and a super thin 50- Micrometer pad on top, then two packets of Purigen.