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Pond in Winter - AquaService - Dnepropetrovsk. Fauna Company
FAUNA Co. AquaService Dnepropetrovsk, Kurchatova street, 4 8 (0562) 33 55 31, 8 (0562) 33 59 92, 8 (0562) 32 05 00
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Pond in Winter

Pond in Winter

How to prepare your pond, fishes and plant to winter season?
Some usefull tips here.

1: Winterizing Your Pond : Cool Tips and Advice for Colder Weather
For many parts of the country, it's getting to be that time of year again. Time to start thinking about getting your fish and plants ready for old man winter...

Every year, as the weather gets colder and we start heading into winter, many of our customers ask us how to prepare their ponds for winter. Pond owners should be aware of several simple things to do in preparing their ponds for colder months.

Fish and plants need very different things in the winter, but can be kept in top condition for the following season if the appropriate steps are taken (see related articles).

Fish should be fed less, floating annuals should be thrown out, potted hardy plants should be cut down and moved to the bottom of the pond, filters should be cleaned & drained, and pumps shut off.

Another good practice that we recommend is to do a partial pond cleaning and water change. It's not necessary to drain the pond completely, but we recommend draining 25% - 50% of the water and net out or remove as much organic debris as possible (i.e. leaves, plants, etc.)

The reason for this is because rotting leaves, dead plant material, and other organic wastes will give off toxic gasses as they decay during the winter. This can be especially dangerous if the pond is allowed to freeze over.

A thick layer of ice can easily form over the pond in sub-freezing temperatures, which can prevent these gasses from escaping from the pond. If allowed to build up, your fish will suffer. The most likely result will be a weakened immune system, and a more vulnerable fish you will have come spring time.

Anything you can do to reduce stress on your fish prior to and during winter, will pay off handsomely in the Spring. Your fish will be much more vibrant and healthy.

Another important reason not to let your pond ice-over is because the oxygen levels in the pond water can drop to dangerous levels. By keeping the pond surface from freezing over, or by at least keeping a 2' - 3' hole in the ice, you can eliminate or greatly reduce these dangers.

Oxygen levels should be maintained during winter if at all possible. If you have a standard aquarium air pump - plug it in outside and let it run all winter.

We also recommend maintaining your salt levels during winter. This keeps your fish's slime coat strong, and immune systems strong all winter long!

Overwintering Pond Fish
The metabolism of koi and goldfish is controlled primarily by water temperature. As the water cools, pond fish require less protein in their diet. When koi and goldfish are fed high-protein food in cool water, the excess protein is excreted as ammonia from the gills. The microscopic organisms that make up the biological filter (and consume ammonia) also slow down in cooler water.

Improper seasonal feeding can lead to a build-up of toxic ammonia, which stresses fish and reduces their winter survivability. When the water temperature drops to approximately 65 F, start feeding with Spring & Autumn Pond Food. This type of fish food is better suited for the dietary requirements of pond fish in cool water and wont pollute the water with excess ammonia. Some water gardeners continue to feed their fish until they no longer come to the surface. I stop feeding my pond fish when the water falls below 42 F.

There is no need to worry about "frozen fish" if a section of the pond is at least 18 inches deep. Pond fish will seek the deepest part of the pond and over-winter there until the water warms in the spring. If your pond is less than 18 inches deep, the fish may freeze during a harsh winter. Check with your local pond supplier if you live in an area with harsh winters.

Some water gardeners with shallow ponds attempt to keep their koi and goldfish in kiddie pools or aquariums set up in a cool basement or garage. This is not recommended because of the extra stress involved in netting, transporting, and re-acclimating the fish to the new environment.

However, if you don't have a choice, and need to bring your fish inside for the winter, be sure to have an aquarium air pump or small fountain to provide oxygenation. The fish should be fed infrequently, if at all, depending on the water temperature. pH, ammonia and nitrite, which should be monitored weekly and especially if the fish are fed.

Small water changes (20%) each month will keep the water in good shape until spring. Koi are "jumpers"- so be sure to cover the pool with bird netting!

Why cant I just let nature take care of my pond in winter?

All summer long, youve enjoyed the tranquility of the water garden-beautiful foliage, sounds of trickling water and colorful fish eagerly awaiting a handful of food.

The water garden didnt get that way by itself. You added the right kinds of plants and fish to create a balanced ecosystem. The water gardens we create look beautiful and sustain life because we follow natures rules. Its the same during the winter months.

Despite all outward appearances, the pond is active even when the water is cold or even frozen. Dead leaves, algae, insects and solid fish waste that have accumulated over the summer slowly break down during the winter months.

This natural decomposition uses oxygen and produces small amounts of hydrogen sulfide, a toxic gas that normally never reaches a harmful level. Few water gardeners realize that the pond must be balanced in winter too. Fish, frogs and other aquatic life are especially sensitive to poor water quality in winter.

A build-up of leaves and other organic matter can cause an imbalance, reducing oxygen to dangerously low levels and releasing poisonous hydrogen sulfide.

One autumn I decided to see how well nature would take care of my two ponds. I let the lily leaves die back naturally, falling into the pond. Leaves and sludge covered the bottom of the pond. What could go wrong? It looked natural.

Come next spring when the ice melted, I was shoveling out black, stinky ooze garnished with dead snails, frogs and my prized fish. I learned my lesson well. Now I use a coarse net to remove dead leaves. I also use a fine weave aquarium net to remove sludge. You can reduce sludge build-up with bacterial "cleaning" products for water gardens.

Caring for aquatic pond plants

Long after the impatiens have been pulled out, water gardeners are still hoping for that last lily bloom.

For some reason, we want to squeeze every leaf, bud and blossom out of our aquatic plants before winter. Unfortunately, cold weather often comes before weve trimmed the cattails or pruned the lilies. Wait too long and all those beautiful leaves will fall off and rot in the water. Trim bog and marsh plants such as papyrus, taro and cattails, before frost hits.

Pull out the hardy water lilies and trim off all the leaves. Yes, even that last bud! Put all the potted plants into the deepest area of the pond to prevent freeze damage.

Tropical lilies wont survive the winter and are often treated as annuals, discarded in autumn. Some water gardeners have saved tropical lilies by storing them in peat moss.

Trim off the leaves and roots and cover the rhizomes in a tray of damp (not wet) peat moss. The peat moss has antiseptic properties and helps inhibit rotting of the rhizome.

The tray of peat moss should be kept in a cool basement or garage and sprayed with water periodically to prevent drying out. Inexpensive submerged plants, such as Elodea, Anachris and Cabomba should be discarded as well as floating plants like water lettuce, and water hyacinths.

Pumps and filters

You wont need to filter the water but its a good idea to keep it moving at the ponds surface.

Pond life needs oxygen even during hibernation. If ice covers the surface of the pond, oxygen cant get in and toxic gasses cant get out.

Submerged pumps with fountains or waterfalls will oxygenate the water and keep a portion of the pond from freezing. If you live in an area that freezes solid I recommend using a pump and fountain to aerate the water.

Set the pump on bricks about one foot below the water. This will prevent the pump from getting clogged with leaves.

If your fountain output appears to be diminishing, check the pump to make sure it is not clogged. Floating pond heaters are available to keep a small area free of ice.

You can also use an aquarium air pump and diffuser stone to oxygenate and prevent ice formation. Even if the pond completely freezes over, the air pump keeps pumping oxygen into the water.

Brett Fogle

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