Is hydrogen peroxide a safe treatment for my fish in the aquarium?

It looks like flea infestation. you definitely cannot use hydrogen peroxide or Dettol to treat it, not only it will not solve the problem it is very dangerous for the kittens. you need to buy a spray called Frontline which is the only safe product to kill fleas for their age, you can find it at any vet clinic.

I don't recommend to use peroxide or any other product not tested and proven safe for pets. Instead use a cleaner (vets and pet stores carry these) that is meant for dog ears. These products will generally not overly dry the skin, cause damage to the ear drum (but if the ear drum is ruptured, any products applied in the ear will cause damage) and these products generally condition the skin as well. Here is a helpful link: https://www.petcoach.co/article/ear-infections-otitis-externa-ear-cleaning-in-dogs/ I hope this helps and please feel free to post any additiona questions.

Pimafix is an acceptable "natural" antifungal treatment. Melafix is for bacterial infections. Kanamycin, erythromycin or metronidazole are good broad spectrum antibiotics. Fungus Cure (by API) is an excellent antifungal. You can find these medications in the aquarium section of most pet stores or even online. Follow label directions carefully and remove the carbon filter insert during treatment if indicated. The cornerstone of any treatment is to first maintain pristine water quality and stable chemistry.

Thanks for using Petco Pet Education Center, formerly Petcoach! I am afraid that it is not possible to accurately help you with this without being able to evaluate this lesion you describe. If this is superficial, you could try to use chlorhexidine pads topically. However, if this is a deep wound, that would not be recommended. I do not recommend spraying hydrogen peroxide. I recommend you have Sadie evaluated by a veterinarian for further assessment and treatment. Good luck and have a good night!

The addition of live prey may have introduced parasites into your aquarium. It is also possible it was pre existing and an unknown stressor may have triggered active infection. Regardless, now you have to treat. Check water quality first. Poor water quality is a major cause of illness and it can also complicate any condition. Test a sample at home with a kit or submit a sample for testing. Most pet stores or aquarists will do this for free or for a nominal fee. Ammonia and nitrites should be 0 ppm (parts per million). Nitrates should be 40 ppm or less but for HITH, try for 10ppm or less. Perform partial water changes using aged or conditioned water that is temperature and pH matched to prevent shock and further stress until water parameters are acceptable. Metronidazole is the treatment of choice for HITH. It will kill Hexamita which is the parasite associated with HITH. You can purchase metronidazole for tanks online or in the aquarium section of most pet stores. Follow label directions carefully. Remove the charcoal from the filter during treatment. A broad spectrum antibiotic should also be used to prevent secondary infection. If you have other fish in the tank, monitor them for similar symptoms. A proper diet is also critical. A vitamin and mineral deficiency may predispose a fish to this condition. Use a fortified pelleted diet. You can soak food in garlic juice (or GarlicGuard by SeaChem) to boost the immune system and stimulate the appetite.

Yes, it would be equal parts of hydrogen peroxide and water. That mixture is only to be used around the drains to keep them open. The fluid will drain from around the tubes, not from the inside of the tubes. Keeping the area clean around the tubes is most important. Do not use the peroxide mixture it on the incision itself. Hope this helps. Best wishes.

While some essential oils can cause problems for dogs, usually this is if they are ingested or applied topically. The very small amount that would be in the air when these products are used would not be harmful. If Tiny has chronic bronchitis or other respiratory disease it might be best to keep him out of the room when you are using these since any aromatic compounds could cause irritation, but if he does not have any underlying medical problems I wouldn't be concerned.