I've been looking up different filter media that would help me mantain good water quality and help sort out a problem I've been having lately with ammonia levels in my tropical tank. I read some reviews that spoke highly of lava filter media. It's supposed to keep water cristal clear and remove smells. It may as well be a decent substitute for carbon ( for regular use, not after medicating) So I bought these two:
Have you guys tried them? Any impressions to share?