I have a black moor and he has a nasty lump on his tail He’s lived with it for three years but in the last week it’s doubled in size and a second is forming next to it Today he’s very lethargic and slow I’ve changed the water and am administering a course of melafix to see if this helps Today came in and he’s at the bottom sitting there and just floating about still breathing and didn’t eat food
Keeping water quality in optimum condition (0 ammonia, 0 nitrite, <20 nitrates) will be crucial. This may mean daily water changes of anything between 20-50%. Monitor the water quality at least twice daily for the next week/s. Your water test results ought to guide you as to what amount to change and the frequency.
Administer the Melafix after a water change, so as not to dilute it by a water change later in the day.
If there's no change in the next few days, let us know, and we'll advise further about whether to try a different/stronger medication.
I'm struggling to focus on the lumps - can you describe them in as much detail as possible or maybe get a clearer photo, please?