The water parameters were ammonia 0 nitrite 1 and I didn’t get to test the nitrates ph 6.7 there was 6 now there’s five sadly he passed away it’s two 7 inch comets one 6 inch common and two small comets the tank size is a 40 gallon breeder and I tried to get the medicine you told me to get before but couldn’t find it at my local pet stores
So o tried using melfix a bacteria medicine
Dropsy is usually a sign of another problem. With that many single tail goldfish in a 40G, I would suspect it’s a water quality issue. You hav nitrites so your tank isn’t cycled. I bet you have high nitrates too. These are toxic to your fish and probably bringing on the dropsy. You have to get the tank cycled and you have to find out what your nitrates are. For now, I would do daily 50% water changes using Prime conditioner as it will neutralize your nitrites and nitrates and detoxify their poisons on your fish. Treating the dropsy isn’t going to help until water issue is corrected. Now, the last thing you aren’t going to want to hear is the fact that there are too many fish in that tank. One single tail alone will eventually need a 100G tank. Those are pond fish, not aquarium fish. You really need to return them and buy a couple of fancy goldfish. 2 fancies will do fine in a 40G. I’m sorry for the negative news but the problem will only be corrected if you cycle the tank and exchange the fish. Good luck! Here’s the info on nitrogen cycle just in case. Aquarium Nitrogen Cycle. By the way, I’ve made the exact same mistake in the past and do have many others. Don’t feel bad, just correct it.
75g Discus Tank
Goldiemom coveed most of the points already.
Just remember that dropsy is a symptom of something but not a disease. In this case, I would guess overstocking leading to a spike in parameters. Try to find somebody in your area with a pond. Then, ask them if they can take any of your goldfish. It will be much better for them.
I did a 80-90% water change and decided to deep clean my filter and yes I know that will mess with my cycle so I’ll be doing 50% water change every 3 days as for the goldfish well if they get much bigger I will definitely sell a couple of them and my mistake the two comets are actually 9 inches I’m kinda really attached to those two I’ve had them for almost 3 years now