From hard to soft water

  1. J

    Jesskateer Initiate Member

    I'm new to aquariums. I have a 38 gallon tank wi an aquaeon quiet 55 gallon filter. When I started this tank I had very hard water. Since then I have gotten a soft water system and even reverse osmosis for my home (not for the tank.) I am still getting hard water readings for my tank even though I've been doing 20% changes at least on a weekly basis. Any suggestions?

    Also my filter cartridge has a rust color to it. Should I change it? Or is it fine? My tank has cycled.

    Sent from my iPad using Fish Lore Aquarium Fish Forum
  2. Viriam Karo

    Viriam Karo Well Known Member Member

    What are the readings out of the tap?

    If you change your filter cartridge, make sure to seed a new one first for at least two weeks (I usually provide a month for seeding to be safe). Have you cleaned the cartridge in dechlorinated water to see if the rust color comes off?
  3. matsungit

    matsungit Well Known Member Member

    It will take a few more water changes. Something is dissolving in your tank. Eventually it will settle out. The rust color is normal. I've had it before and it's not an issue.