Treating Fin Rot With Hydrogen Peroxide?

Discussion in 'Freshwater Beginners' started by Daniel Kraus, Apr 15, 2018.

  1. Daniel Kraus

    Daniel KrausValued MemberMember

    so my fish have been showing signs of fin rot for a few weeks now. I at first though water changes would be enough but sadly they aren’t. I do not have the money for medicine however I did hear you can treat with hydrogen peroxide. I have a few questions such as how much? Is it safe for tetras? Do I need to remove my media? Will it crash my cycle? How long should I do it for? And how often? Any help is appreciated.
  2. Merryn O'Shea

    Merryn O'SheaValued MemberMember

    I’ve heard a little about using hydrogen peroxide too, however I have not use it personally and don’t think I ever will. It’s typically used as a disinfectant for wounds and some fishkeepers use it to create a medical bath for their fish. I’m unsure of the dosage but if you look into it more then maybe you can find out the dosage and how long to keep the fish in there for.
  3. Fanatic

    FanaticFishlore VIPMember

    I haven't used it, but it would definitely have to be diluted.
    Personally would not do a treatment inside of the tank, rather in a sizeable container.
  4. Rylan

    RylanWell Known MemberMember

    I think @david1978 might have experience with this...
  5. david1978

    david1978Fishlore LegendMember

    Yep i treat all my new bettas with it just as a precaution. Do a 50% water change, dose 1ml of 3% peroxide per gallon of tank. You can remove your filter media for 8 hours just to be safe but it never hurt my cycle. Dose every other day for a total of 3 trearments. If doing it in a separate container i would leave him in for 8-12 hours after that its broken down into water and oxygen. Kills algea too lol.
  6. Hmmp84

    Hmmp84New MemberMember

    Does it help with pop eye or any other infections or fungus??

    Would it help this? ?


    Sorry didn't mean to do it twice.. .Lol

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    Last edited by a moderator: Apr 15, 2018
  7. david1978

    david1978Fishlore LegendMember

    It might i never dealt with popeye though. It kills off any simple cell organism so external bacteria and algea are effected and not plants or fish. So the fungus it would definitely help with, popeye im not sure but it would be safe to try.
  8. Hmmp84

    Hmmp84New MemberMember

    So it's safe to use with most fish or ?? Not even sure what's wrong my algea eater. . Someone suggested pop eye or injury...
  9. david1978

    david1978Fishlore LegendMember

    Yes its fish safe.
  10. Hmmp84

    Hmmp84New MemberMember

    Awesome ...Ty!!
  11. OP
    Daniel Kraus

    Daniel KrausValued MemberMember

    That’s exactly what I needed thank you. I hope it’ll work
  12. shani

    shaniNew MemberMember

    I am also trying to treat my betta for fin rot. I wanted to ask if I would keep on adding a new dose every other day to the tank or should i add new doses after doing water changes during the three treatments. this is my first betta fish so I'm still relatively knew to all this
  13. david1978

    david1978Fishlore LegendMember

    Yes every other day you want to do a water change to remove the dissolved organics from the water and then redose.
    Peroxide How To
  14. angelcraze

    angelcrazeWell Known MemberMember

    That is great info from @david1978

    I use mblue for finrot, but h2o2 works the same apparently. I use mblue full strength on a qtip and swab/paint the fins or body topically (not close to the face tho). Works like a charm often with one treatment :)

    I net the fish, place in top of glass canopy while fish is still in net, apply the swab and return fish to tank.