I am thinking of getting some and putting it in a small hang on back filter. It would evidently remove some of the nasties in my tap water
You might try placing the purigen in a PhosBan Reactor for "the most efficient use of PhosBan or other chemical filter media"
I was going to get some Purigen or Phosguard or Renew or something for my aquarium. I would put it in a PhosBan reactor. (about $40 for the reactor + $10 for a pump + $4 for the hose + ? for the the media or resin)