Hey all
I recently moved into a house that came with a large outdoor pond. It contained about 12 medium sized goldfish, I brought along 3 smaller goldfish who moved in with them.
All good for two months until my smallest one suddenly died (everyone else seems fine).Symptoms were that he became lethargic and then suddenly died after a couple of days. He also had black marks (see photos).
I've been fish keeping for a while so I immediately tested the water thinking an ammonia spike, this is what I got:
ammonia 0 (This wasn't totally a bright yellow like the card but I compared to tap water and we use prime. quite sure it is 0)
nitrites 0
nitrates 10-20
ph 7.5-8
So I'm at a bit of a loss on this one. Pond has decent filtration and oxygen flow. I also only feed every two days sparingly. I ran the ammonia test so many times and it just turned up nothing.
Any thoughts? I really don't want to see my other fish get sick
I recently moved into a house that came with a large outdoor pond. It contained about 12 medium sized goldfish, I brought along 3 smaller goldfish who moved in with them.
All good for two months until my smallest one suddenly died (everyone else seems fine).Symptoms were that he became lethargic and then suddenly died after a couple of days. He also had black marks (see photos).
I've been fish keeping for a while so I immediately tested the water thinking an ammonia spike, this is what I got:
ammonia 0 (This wasn't totally a bright yellow like the card but I compared to tap water and we use prime. quite sure it is 0)
nitrites 0
nitrates 10-20
ph 7.5-8
So I'm at a bit of a loss on this one. Pond has decent filtration and oxygen flow. I also only feed every two days sparingly. I ran the ammonia test so many times and it just turned up nothing.
Any thoughts? I really don't want to see my other fish get sick
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