Does anyone know whats in the Aquarium Pharmaceuticals tap water filters?

[megs_clark]

Does anyone know whats in the Aquarium Pharmaceuticals Tap Water Filters. I was curiouse if its just DI or if theirs other stuff in the cartrages to?

[Aquattro]

If it's the one I'm thinking of, just DI. I've recharged many of them over the years.

[megs_clark]

Thats great, I should save a bit doing it that way! Thanks

[Aquattro]

Recharging is messy, so I'd save up a few of them and do them together. Outside is best

[megs_clark]

Lol I will definitly do it outside if I recharge them. I think I have 4 cartriges already in the closet. I might just buy the refill bag off the bulk reef supply site though, still alot cheaper then buying the replacment cartrages. Ill have to google the recharging abit.

[gobytron]

There is carbon of some sort as well....
There are two substances split up by a permeable membrane.