Used marine aquarium for freshwater

  1. jogeorge Initiate Member

    Hello all!

    I'm a beginner at fishkeeping and have found a great deal on a 30 gallon marine aquarium. Now im wondering if its ok to use it for freshwater fish.


  2. Lexi03 Well Known Member Member

    As long as yourinse the tank well, and it should be fine, we have bought a couple used tanks that where saltwater and switched them to freshwater.
  3. jogeorge Initiate Member

    Great, I thought the same

  4. Akari_32 Fishlore Legend Member

    You may also try distilled white vinegar to give it a good scrubbing if you can get it clean with warm water alone :)
  5. CichlidSWAGA Well Known Member Member

    2 out of the 3 tanks i have where SW i just cleaned it with vinegar like Akari said. And just rinse it very well
  6. bowcrazy Well Known Member Member

    I have tanks that have housed everything from bugs to snakes to saltwater fish before and have never had a problem. As long as you give the tank a good cleaning using a bleach solution of one part bleach to 10 parts water the tank should be safe no matter what type of animal was kept in it before. Once I have cleaned a tank up to my satisfaction I rinse it real good with freshwater and I personally fill it to the top and give it a double dose of Prime to remove any left over chlorine bleach. Sometimes a good soaking in a vinegar water solution is needed to help remove mineral build ups and if the tank is glass a single sided razor blade can be very helpful in removing the build up but I don’t recommend using a razor blade on an acrylic tank because they are easily scratched.