Better Water with Charcoal for Fish Tank Filters
You've probably noticed those little black bags of charcoal for fish tank filters sitting on the shelf at the pet store and wondered if they're actually doing anything for your fish. It's one of those things that most beginners just buy because the box says so, but seasoned hobbyists often have a "love it or hate it" relationship with it. If you've ever looked at your tank and felt like the water was looking a bit yellow or smelling a little swampy then you've seen exactly why people swear by this stuff. ...