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11 votes
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Why are my fish dying?

After seeking advice I performed an ammonia test on the pond water and it came back at 8 ppm, which is the highest reading on the chart. This means that the water is poisonous to the fish. It turns ...
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  • 321
6 votes

Why are my fish dying?

This looks like a form of Dropsy. Dropsy is a generic term for edema in fish often caused by bacterial infection. Fish get sick for all kinds of reasons, stress, oxygen level, water quality, ...
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  • 253
5 votes
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Goldfish with white spot/fungal infection/something else?

It looks like a fungal infection. It is common for pondfish to get this or other types of problems in the spring before the immune system of the fish starts working (it takes some time for the water ...
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5 votes

What are the best mosquito-controlling critters for a pond?

As far as I know, dragon-fly larvae feed with mosquito larvae, and dragon-fly adults feed with adult mosquitoes. Now, where do you get the dragon-flies from, is another question, which I cannot answer....
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  • 1,945
5 votes

Are there any species of turtles that won't eat fish?

It will be difficult but not impossible to find a turtle which fits your needs. There are some main factors you need to focus on: temperature and water quality. The temperature will be important for ...
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  • 5,627
4 votes

Massive koi death in pond, without an apparent reason -- need help!

What I think might have happened before your koi started to die is this. As the temperature in your pond got above 20 °C, the koi eggs started to mature, and after some days of temperature still ...
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4 votes

Is it necessary to cover the top in a pond with silver arowana?

Arowanas are notorious for jumping and in the wild will often jump out of water to catch some small insects or other prey. It's probably less likely when they're in a pond because there is nothing to ...
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  • 5,124
4 votes

What are the best mosquito-controlling critters for a pond?

Any small fish except possibly goldfish/Koi. My Koi are confirmed vegetarians, never make any attempt to eat fish of any size. Guppies and gambusia are also called "mosquito fish" because of ...
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  • 1,726
3 votes
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Do pond fish need a pump, filter, or aerator, considering that this is not found in natural ponds?

In nature the fish only live in these ponds that have a good quality. The other ponds have either only plants and algae, or are more muddy, stinky places without higher forms of life. If you have a ...
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  • 5,627
3 votes
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Colour for turtle pond

Most liners for ponds are black or grey; this is mostly for UV protection to make the liner last longer in the sunlight. Pre-formed ponds are often black for the same reason, but they can be painted ...
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  • 18.8k
3 votes

What substrate/base should I use for this small fish pond?

It is best to keep the bottom of a pond as clean as possible. You will need to do a spring clean every year to remove the waste like leaves and other stuff. Goldfish are known to dig and to eat plants,...
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3 votes
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What substrate/base should I use for this small fish pond?

Keep it bare bottom and use pots for any plants that you add to it. Unless the pond is permanent like concrete and I would still be hesitant to suggest it, using a substrate in a pond is unnecessary ...
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  • 3,073
3 votes

What substrate/base should I use for this small fish pond?

You can forget about any layers with goldfish or Koi because they will mix it. Generally plants are put in pots, often with large gravel on top to try to keep the fish from digging. The liner in the ...
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  • 1,726
3 votes
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Goldfish die in hours

No, the pump is not the reason your fish die. Please test your pond water and tell us these parameters: pH, nitrite and ammonia. These are the most important parameters of the water, you might get the ...
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3 votes
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What happens when a gold fish pond freezes?

It is unlikely that a fish pond would freeze solid and have the gold fish survive. As temperatures drop the fish enter a state of torpor (similar to hibernation). I could not find any reliable ...
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3 votes

How to prevent snakes from eating goldfish in pond?

The snakes stop eating fish when there are no more fish. You can try killing the snakes, but they are fast. I did kill one by putting a fish trap under the water; the snake went in, could not find the ...
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  • 1,726
3 votes

Are Koi Safe in the Summer?

It will mainly depend on pond exposure to the sun, it's location and construction, meaning that if you don't have enough water, enough shade and a good ratio fishes-water volume you will need to be ...
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3 votes
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Goldfish breeding behavior?

This is classic mating behaviour in goldfish and other fish in the carp family like koi. The mating behaviour will most often happen in the evening as the sun sets,it can be a danger to the fish as ...
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  • 18.8k
2 votes

Why did all 45 goldfish (and 2 mosquitos) in my pond suddenly begin an overnight, 4-day die-off?

We likely don't have enough information. However, there should be NO nitrite or ammonia in an established pond. The presence of nitrite means the presence of ammonia. Ammonia will come from the ...
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2 votes

Why did my established pond suddenly have a mass death event?

Based on the info in your question and comments: water tested "fine", plants are still alive, and death over time (not all in one day) suggests fish illness. Since you didn't mention any signs of ...
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  • 3,017
2 votes

Would an alligator decoy work to deter herons in a state where alligators don't live?

We live in the Northeastern U.S. and there are no alligators in our state or any of the surrounding states. Our fake alligator works great. We originally used it for raccoons which were eating the koi ...
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2 votes

Would an alligator decoy work to deter herons in a state where alligators don't live?

Yes it will work but,yes there is a but it will not work in the long run herons learn over time so you can not be sure of the effect over time. You might try an motion activated sprinkler one bonus ...
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  • 18.8k
2 votes

What role does algae play in healthy pond life?

Algae for ponds, fountains, wall waterfalls or any other water feature: Algae really performs an essential and imperative part, much the same as some other plant in your pond - that is to assimilate ...
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2 votes
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Did the Bird's Eye chili kill my pond fishes?

Water movement is much more effective than plants for the oxygenation of water. Your live bearers will overpopulate a small pond in less than a season. Water movement can overcome the negative affect ...
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  • 1,726
2 votes

Did the Bird's Eye chili kill my pond fishes?

I am no expert but my grandparents love their fish and they always day fish need clean water to roam in so maybe you should filter out the chillies so they do not consume them also check all aspects ...
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2 votes

How to siphon a pond?

I use a sump pump. After awhile and the pond is full of leaves,twigs and other debris I get in with a spring rake ( rubber liner )and rake up the stuff so that is does not plug up the sump pump. Right ...
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  • 1,726
2 votes
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Do turtles need direct sunlight?

Turtles need to get dry once per day. They only take a sun bath at secure points. This means points, where they have the possibility to fall/drop into (almost deep) water to hide from predators. This ...
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  • 5,627
2 votes

Do pond fish need a pump, filter, or aerator, considering that this is not found in natural ponds?

A pond usually has many more fish than a natural pond. Likely much fewer plants in a home pond than a natural. And artificial food is added. And, as answered, in warm weather the higher fish ...
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  • 1,726
2 votes
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Will shubunkin and other fancy goldfish eat smaller fish in a pond?

As long as you can be sure the fish you add is 10% the size or more of the goldfish size, the goldfish will not eat the other fish. Most smaller fish are good at protecting themselves from getting ...
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  • 18.8k
2 votes

How to siphon a pond?

I think your best option is to get a pond vacuum, it is a good investment for you to get rid of the soil in your pond. A pond vacuum will save you a lot of work cleaning the bottom of your pond each ...
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  • 18.8k

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