3 years ago #1
Alexandra
Guest

Hello!
So I had two goldfish in a 10 gallon tank. It's cycled, I check nitrates and nitrates biweekly. I adjust pH and hardness myself. Nitrates are 0, pH is 7, can't remember hardness right now.
It has a filter, and I do 30% water changes every week.
So anyway, my lovely little fantails have suddenly become very sick the first one to get sick died within a week. He was floating on his side at the bottom of the tank and tried to hide in dark places. The inside of his hills were red. By the 4th day, his spine had become crooked. It remained crooked in the same direction no matter which side he lay on, and was crooked after he died too. He couldnt move his lower half, either. Now, it's been about 3 weeks and my last goldfish is doing the same thing!!! His back isn't crooked, but he's laying on his side and can't swim normally. I put some antibiotics in the tank for a week, but they did nothing. What could this be?!
I have praziquel, in case it's flukes.
Thank you!!!!!

Posted on Tropical Fish
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3 years ago #2
jlk
Wiz
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Alexandra wrote:
Hello!
So I had two goldfish in a 10 gallon tank. It's cycled, I check nitrates and nitrates biweekly. I adjust pH and hardness myself. Nitrates are 0, pH is 7, can't remember hardness right now.
So anyway, my lovely little fantails have suddenly become very sick :( the first one to get sick died within a week. He was floating on his side at the bottom of the tank and tried to hide in dark places. The inside of his hills were red. By the 4th day, his spine had become crooked. It remained crooked in the same direction no matter which side he lay on, and was crooked after he died too. He couldnt move his lower half, either. Now, it's been about 3 weeks and my last goldfish is doing the same thing!!! His back isn't crooked, but he's laying on his side and can't swim normally. I put some antibiotics in the tank for a week, but they did nothing. What could this be?!
I have praziquel, in case it's flukes.
Thank you!!!!!

What are you using to check your water parameters (ammonia/nitrites/nitrates/ph)-liquid or strips? What are your exact readings for ammonia/nitrites/nitrates/ph? Your tank doesnt sound cycled & the symptoms you are describing sound like ammonia poisoning. Fancy goldfish need 20gals for the first fish, 10gal for each fish after. This is the minimum for them to be healthy & thriving. Start by doing an immediate 50% pwc with a good water conditioner (prime or amquel plus) & make sure you match the temp of the new water to that of your tank water. The antibiotics most likely killed off any bacteria you had established (antibiotics kill bacteria-good or bad) & you now have a fish-in cycle going on in an overstocked tank. Do not use any more meds because they are only creating more problems. Your fish may recover with daily pwcs to keep your ammonia & nitrites under control- they should be as close to zero as possible. If you are unsure of anything, please ask & we will help!
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3 years ago #3
Alexandra
Guest

It's so confusing! I'm using a Hagen test kit. I usually use it for my betta's 6 gallon planted aquarium and it works wonderfully there.
I did kill all my happy little ammonia eating bacteria, so I started putting in SeaChem Stability stuff about 2 weeks ago. It cycled my betta's tank really fast so I could be lazy with it, and I checked nitrates right before posting this and they were 0.
I can see this one being ammonia poisoning, but I wouldn't understand the first one. I was using Tetra test strips (I usually don't trust tetra, so not sure how reliable these were) and my ammonia levels were 0!!! So I'm confused and frustrated. Is there anything else it could possibly be??
Thank you for your answer!!!

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3 years ago #4
jlk
Wiz
Blogs: 0
Forum: 7,726
Votes: 326
Alexandra wrote:
It's so confusing! I'm using a Hagen test kit. I usually use it for my betta's 6 gallon planted aquarium and it works wonderfully there.
I did kill all my happy little ammonia eating bacteria, so I started putting in SeaChem Stability stuff about 2 weeks ago. It cycled my betta's tank really fast so I could be lazy with it, and I checked nitrates right before posting this and they were 0.
I can see this one being ammonia poisoning, but I wouldn't understand the first one. I was using Tetra test strips (I usually don't trust tetra, so not sure how reliable these were) and my ammonia levels were 0!!! So I'm confused and frustrated. Is there anything else it could possibly be??
Thank you for your answer!!!

I am not familiar with Hagen tests. Strips simply can not be trusted. If you are getting zero nitrates-this would indicate your tank is not cycled. Nitrates are the end process of cycling: ammonia>nitrite>nitrate. So this would mean you have very high levels of ammonia & possibily nitrite-both are highly toxic & are poisoning your fish in addition to everything else you are adding. Your goldfish needs a big pwc with a good conditioner & you need an api test kit so you can see what really is going on in your tank & what needs to be done to keep your fish healthy. Hope this helps!
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