How to Shock a Pond Quick How-To Guide
If fish are dying in your pond or if you see lots of algae, it may be time to shock the pond to clean it up. Algae needs oxygen to grow, just as fish and aquatic vegetation do. However, too much algae can rob fish and plants of the oxygen they need. Shocking your pond and getting rid of the harmful algae can restore the clean, clear look to you pond. Because desirable plants and animals live in ponds, owners look for natural enzymes and organic compounds to clear the water. Chlorine should only be used as a last resort.
Remove all dead or decaying plant and animal life from the pond. Algae feeds on the decay process.
Place the correct amount of algaecide in your pond according to manufacturer’s directions. For example, if you have a 120-gallon pond, you would need to use 2 teaspoons of general Algaecide. Each algaecide is different, so read the directions closely.
Let the pond pump aerate and spread the algaecide. If algae is still present after a week, shock the pond again.
Planning: Pond Calculations
Here’s the rule of thumb for measurement of your pond.
SQUARE FEET on the surface area.
- Rectangle
length x width = Square feet of pond
- Circular
3.14 (1/2 diameter x 1/2 diameter) = square feet of surface
NUMBER OF CUBIC FEET
- Rectangle
average length x average width x average depth = volume in cubic feet
- Circular
3.14 (1/2 diameter x 1/2 diameter x depth = volume in cubic feet
To calculate GALLONS in your pond
cubic feet x 7.48 = capacity in gallons
FORMULAS TO DETERMINE APPROXIMATE AMOUNT OF ROCK NEEDED:
- Quantity of BOULDERS in a pond (tons) = length (ft) x width (ft) divided by 65
- Quantity of BOULDERS using 1.2.1 ratio. Length x Width divided by 40
- Quantity of 1/4 inch to 3 inch GRAVEL (tons) = tons of boulders x .45
- Quantity of BOULDERS in a STREAM = 3/4 TON PER 10 FEET OF STREAM LENGTH
Around the FACE of A SIGNATURE 6000 BIOFALLS you will need approximate 3/4 TO 1 1/4 tons of boulders.
Note: If you are building a large water feature you will need to increase the tonage of rock as the stone you will use will be larger and carry more weight.
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Dividing Plants at Spring Clean Out
Your plants can be divided in the spring and, if in pots that you can lift out of the pond, you could wait till late spring if you so desire as any plant can be divided up to early August. All perennial plants such as all Pickerel, Arrow plants, Iris and any other perennial plant in your pond should be divided approximately every three years depending on how large they have become or how crowded the pot has become.
Marginal plants can be divided two ways; either you can gently pull apart the plants which will leave you with several new plants. Or you will need a knife to cut through the plant. Plants like Pickerel, arrow plants grow in a bulb type and can be easily divided. Gently tease the growing points of the plant apart and/or dividing the plants at a natural breaking point. Iris grow in a rhizone which also can be divided by pulling apart, just be careful that you get some root with each plant. Always throw away mushy or diseased sections. Trim back any old or dying leaves, old rootstock or spent flowers.
If using a knife, clean with a bleach solution before cutting other plants. Some of the bulb plants such as the Arrow plant are late to produce any growth. You will just see the bulb and if it is in a pot, just thin out. If planted in the pond, you may have to look hard for these bulbs or divide later. Iris rhizone can be divided and replanted in the pond. Iris do not need to be planted very deep and only like their rhizone wet. Most of the pickerel, rushes, iris, and arrow plant need to be on the first shelf as they are marginal plants. The second shelf is usually held for the Lilies.
Floating plants (such as parrot’s feather) and oxygenators (anacharis, hornwort) need to be trimmed also. Trim off 6 to 10 inches of the fresh growth at the top of the existing strands. Cut out the middle section of straggly growth. These cuttings will root on their own accord. Parrot’s feather can be tucked into the rock substrate to hold it in place or placed in a pot.
Lilies have two forms:
Clump-Forming Lilies and Tuber-Type Lilies.
Clump Form Lilies
The clump form will produce new baby plants at the base of the mother plant. Wash the soil off the roots and look for these delicate little plantlets at the crown of the larger plant. Gently work them a part. Mix a granular, slow release fertilizer into the soil at the bottom of the plant pocket or pot and replant the largest clump with the crown at or just above the soil surface. Soil just needs to be good clay dirt not potting soil or use aquatic soil (available at any Home Depot). Remove any ragged leaves and flower buds to save energy for root growth. Always use pebbles on top of the soil to prevent fish from disturbing the soil and fouling up the water in your pond. Believe me this can make quite a mess in your pond by turning your water brown if you do not use gravel particularly if you have large fish.!
Tuber-type Lilies
The tuber form of the water lily produces new plants off the rhizome or tuber. Find a firm piece of tuber with plenty of growth points and use a clean, sharp knife to cut off a section that is at least two inches long (three or four inches is best). It might be tempting to just snap off a chuck, but a clean cut will heal faster.
Mix granular fertilizer into fresh soil at the bottom of the plant pocket or pot and plant the tuber with the cut end against the side of the pot/pocket. Make sure growth points are at or above the soil surface, but the cut end can be below the soil. Layer pea gravel or a couple of well-placed rocks that help keep the plant in place until its new roots anchor it. Also, remove the ragged
leaves and flower buds to save the plant’s energy for root growth.
Tropical Lilies are Different
Starting out as a small, moldy looking bump at the leaf’s sinus (the point where the two lobes of the leaf meet), a tiny plant clone forms. Cut the stem of the parent leaf, turn it upside down on the water surface and a plantlet will grown from the leaf sinus. When roots form, the plantlet can be removed from the parent leaf, planted in a small, soil-filled pot and placed in shallow water.
As with most lilies, when young plants have four or five good-sized leaves, it can be placed in a full size pot or plant pocket and placed in deeper water.
Fertilize again with tablets as the season proceeds. Push tablets down the sides of the pot away from the plant. Continue to feed your lilies about once a month until fall.
So don’t be shy….divide and share with your friends. They are hardy plants and as long as you keep them well hydrated, it is hard to make a mistake besides you will get more bloom from a plant that has more room to grow.
Happy Dividing,
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Facts: H2O – Oxygen in your Pond
You know that your pond needs oxygen in the water but do you know how much and how often?
Oxygenation is the process in which oxygen is diffused into the water. This process happens every time your water comes into contact with the air.
If there is no aeration in a pond, the pond cannot exchange gasses at the deeper levels of the pond and can only exchange gases at the water surface and therefore, will support only a few fish. Ponds deeper than 3 feet will benefit from a bottom aerator in the summer, especially if this pond is a koi pond.
A pond needs to absorb oxygen from the air and it also needs to release carbon dioxide and hydrogen sulfide among other gases.
Hydrogen sulfide is one of these gasses that contribute to breaking down organic matter in the bottom of the pond. The pond bottom has less oxygen than the upper layers of a pond.
When you use a biological filter or a fountain or have a stream, you increase the surface that is exposed to the atmosphere. Harmful gasses can be released and oxygen absorbed.
Is something wrong with my fish when they swim up near the waterfall and roll around in the area?
They are getting oxygen created by the bubbles that generated from the waterfall. This is a fix of higher concentrated oxygenated water.
But on the other hand, if you see your fish “gasping for air” at the water’s surface, “they may be lacking enough oxygen in the water”.
What is the role of plants in the oxygen supply to a pond?
Plants should only cover 50% to 60% of your pond surface. If you have too many plants in a pond and the entire surface is covered you will have very little gas exchange unless you have a very large waterfall and/or stream.
Adding submergible oxygenator plants (such as Anacharis or Hornwort) will add oxygen to the water but while they add oxygen during the daylight, they use up the available oxygen at night the same as other plant life in the pond.
Anacharis is an important submergible plant as it uses up nutrients that starve out the algae. Go to planning your pond to see how many Anacharis plants you need for your size pond.
Rarely does one overstock with oxygenators, but if in the morning you see your fish gasping for air, you may need to remove some of your oxygenators. The oxygenators may be taking too much of the oxygen over night. Removing too many at once is not good either since it may upset the balance of your pond. Remember plants remove the oxygen in the pond at night.
Oxygenators are the utility player in the roster of pond plants as they serve as a natural filter, a hiding place for fish, an algal combatant and they look good while doing it all.
Suggested oxygenators: Anacharis, Hornwort, Cabomba, Parrot Feather, and Mosiac Plant. The submerged ones create the most oxygen.
How do fish enter into the oxygen issue?
There is a limit to the number of fish that you can keep in a pond before you compromise the quality of your pond water. When you exceed this number you start having problems with water quality and fish health. Usually it is recommended to have 1 inch of fish (mature size) per 1 square foot of surface area of your pond. Stock lighter in the beginning and gradually add more fish but never stocking more than 1.5 inches to 1 square foot.
How does the temperature of my pond water affect the oxygen supply?
The hotter the water the less oxygen it can hold, therefore cold water holds much more oxygen. Using a small bubbler or aerator adds enough oxygen for most size ponds in the winter. Fish do not require a lot of oxygen in the winter because of hibernation. Warm water has a low capacity for holding oxygen, while cooler water can hold gigantic amounts of oxygen. Warm water and increased activity go hand and hand, and that increased activity means fish require more oxygen.
Stressed fish often begin to develop diseases. If you live in a very warm climate, you might consider stocking with more tropical fish like the swordtail or tilapia rather than coldwater fish.
Also if you live in a hot zone, it is sometimes advised to do a partial water exchange when you water temperature gets high (over 80 degrees). Don’t forget to dechlorinator or use a water conditioner for any city water. You can also add an additional bubbler that will increase the oxygen level of your pond.
To keep your oxygen flow at a healthy level, you need to keep a watch on the amount of plants and fish in your pond. Plants should cover no more than 60% of your pond. Remember fish will produce more fish so start with fewer fish in the beginning.
If you ever have to shut down your pump for any length of time, aeration is vitally important for the life of your fish. In hot weather, your fish could be in danger with a pump failure. It is always wise to keep a bubbler or aerator on hand just in case. In very hot climates where the water is very warm, fish can die within a few hours without oxygen.AquaForceTM Solids Handling Pump. This pump has a three year warranty and can be used for winterizing or in hot weather to provide additional oxygen to the fish. Comes in two sizes 1000 GPH, and 2000 GPH. And best of all it cost between $3.65 to $8.03 to run.
A back up pump is always a good thing to have.
A good recommendation is the
Call customer service at 877 780-1174 if you have questions.
Happy Pondering,
Aquascapes.com
