Carbon

[Sirtastic]

So I saw that you can lower your Cl2 by putting carbon in your tank. Do you just have to put it on your gravel? And how much per liter?

 

[flchamp89]

The preferred method is to treat tank water with a conditioner such as seachem prime. Carbon in your filter is an option. But it does not last long. If you run carbon I would still recommend
prime as it also removes/locks up other metals and elements.

 

[Sirtastic]

Okay thanks!