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bio balls

  1. Is it possible to alter the Biocube Filtration Set Up once it's running?

    Beginner Saltwater Aquariums
    I just filled my tank with water, added live sand and rock and I'm waiting for the cycle to finish but I wanted to know: Is it too late to add a media rack to the back of my tank? I want to purchase one but I'm worried that since I started with the bio balls already i'm stuck with them If it is...
  2. Looking for advice for sump media

    Freshwater Aquarium Equipment
    Changing my 180 gal salt to freshwater. I had bio balls in the pipe to the sump. Recently saw the Seachem product pond matrix. Might it be a good idea to use it in the pipe to the sump (which is basically a wet dry), and/or in the sump? Since no more protein skimmer, I have a lot of space in...