2 years ago #1
Ben
Guest

I have zero Ammonia, zero Nitrites, and zero Nitrate reading. And my ph is 7. My pond is 2500 liters and have had it for 6 months i get the water tested every month and the levels dont change at all. I have 40 gold fish and 10 baby koi. In the last few days 2 of my gold fish have gotten Dropsy/Pine cone disease. Why would my fish get this and is it bad that my levels are reading zero all the time?

Posted on Cold Water Fish
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2 years ago #2
jlk
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2500l is 660g. Unfortunately, your pond is heavily overstocked. Koi require 500-1000g per fish. Gallons, not litres. 40 goldfish would need 2000g. So, for the fish you have, your looking at a bare minimum of 7000gallons. I dont believe your parameters read all zeroes- please invest in a good liquid test kit such as API fw master kit asap. Start doing water changes a few times a week as well.

You need to address your stocking situation immediately. The pond is too small for even a single koi. Overcrowding combined with inappropriate water conditions will continue to result in sickness and fish demise until its addressed. Everyone needs to be treated with a few cycles of praziquantel as well as antibiotics in addition to regular water changes. The severely dropsied fish such as the one in the pic will likely not recover unless you seek immediate veterinary intervention. If you are in country with strict limits on fish meds, you will need vet help as well to acquire proper meds.

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2 years ago #3
Ben
Guest

How many fish can I have in the pond. I have a large pump and filter which can do 10000 liters per hour?

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2 years ago #4
Ben
Guest

How many fish can I have in the pond. I have a large pump and filter which can do 10000 liters per hour? And the test kit I am using is the liquid test kit. 'API fw master kit' and another two different ones all reading the same thing every time

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2 years ago #5
jlk
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Is it planted? Then this would make sense. For a 660g pond, the number of fish depends on the type of fish. Commons/singletails require more water than fancies but they both require LOTS of water.

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2 years ago #6
rolphy75
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My parents have a pond that is around 2800 litres and is very heavily stocked as well as heavily planted, they never test or Pwc the water and never had for as long as i can remember (except for maybe a yearly PWC), living in the UK, the great british weather probably does enough for PWC naturally. The pond has only recently been fitted with a little fountain with a filter on it. Out of curiousity i tested the water a couple of weeks back with my API liquid freshwater kit and my readings came back as 0 amm, 0 nitrite and 0 nitrate.

Any way, im not sure about the dropsy, but did find this page on another site
http://www.fishchannel.com/fish-health/disease- prevention/dreaded-dropsy.aspx

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2 years ago #7
jlk
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Thats actually a very spot on article. The important issues to point out are stress, stocking, lack of water changes and diet as well as other issues such as untreated parasites such as flukes. The exact causes are numerous and treatment is generally unsuccessful but prevenative measures such as mentioned are paramount to healthy fish.

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