Purigen is a premium synthetic adsorbent that is unlike any other filtration product. It significantly raises redox. It polishes water to unparalleled clarity. Purigen darkens progressively as it exhausts, and is easily renewed by treating with bleach.
This stuff is just amazing. I use it on my HOB filter for my turtle tank - crystal clear water. Amazing!
I use it in my 55 gal. tank which has 3 BIG goldfish, 2 juvenile goldfish offspring, loaches, corydoras, plecos and snails. The water is sparkling. I use a canister filter here and undergravel filter. When the water rod (jets) stop making a good hard stream of bubbles (telling me the hoses and filter are ready to be cleaned) I switch out to the second set of filter media and add itional Purigen filter bags I have ready. I can do a quick media change this way, while the Purigen soaks I have already got the filter back up and running. The benefits of having back up bags ready to go and extra filter pads.
I really like the recyclable facet of Purigen, it lasts much longer than using carbon and zeolite in my media bags. I assume it loses some of it's effectiveness, so I top-up the existing filter bags with new Purigen, and have added an extra bag to the mix as well. I have algae growing, which the fish eat, so obviously over filtration isn't an issue.
The water is crystal clear. Never has the water looked so good!
I have used purigen for a year and it's the so much more convenient than charcoal. I have 10 tanks and use purigen in all of them. I purchased enough so that when it's time for filter maintenance I can take out the exhausted purigen and just swap it for a regenerated pouch. Yes you can regenerate purigen by following the instructions on the package or you can Google how to do it. I personally have cleaned and reused purigen up to 5 times . You can tell when purigen needs to be fully replaced when it stays totally brown even with bleaching . It keeps my tanks cleaner longer. I highly recommend purigen.