A friend gave me a brand new Carolife Pure-Flo II 50 gallons per day filter. It's look fairly simple to hook up but my question is do I need to add anything else to the water besides salt when I do my water changes? I have a 75gal FOWLR.
Thank you.
Depends on the salt mix you are using, some are better than others. I personal check PH of new water just to make sure. Even with same manufacture each batch could be different.