Tropical Fish Keeping banner

general hardness

  1. (beginner) Need Help With Kh And Gh?

    Beginner Freshwater Aquarium
    Hi So I have a 20 gal aquarium that is currently going through a fishless cycle. It seems to close to done, the nitrites are at 2.0 ppm nitrates are at 160 ppm. I'm using Api's GH and KH Tests and GH seems to be 120 ppm? (7 drops) and KH was 100 ppm? (6 drops). I am wondering if the ppm seems...
  2. General Hardness

    Beginner Saltwater Aquariums
    I am still cycling my tank but me GH is still very high reading 16 on "tetra dip test" do I need to lower this before adding live rock and if so what can I do to lover the GH?
Top