Concrete ponds can be “cured” and made safe for fish without any special coatings. Keep the newly constructed pond filled for a week, then drain and refill. … To cure, mix one-gallon household vinegar to each 200 gallons of water in your pond and let set three days. Empty and rinse thoroughly.
Is concrete toxic to fish?
Concrete ponds can be “cured” and made safe for fish without any special coatings. … Wait a week after the final pond refill and then test the pH. Then place some fresh tap water in a bowl and let it sit overnight to allow oxygen and carbon dioxide levels to stabilize. Check the pH the following morning.
Are cement pond safe for fish?
Concrete ponds can be “cured” and made safe for fish without special coatings. Keep the newly constructed fish pond filled for a week, then drain and refill.
What kind of concrete should I use for a fish pond?
For the floor of your pond, plan on 4-inch-thick concrete. If your pond floor is 10×12 feet, that means you will need about 1.5 cubic yards–or about 6000 pounds–of concrete. You should consider pouring concrete for the sides of the pond as well. If they are vertical, you will have to form them with wood first.
Is Concrete bad for a pond?
Concrete has pebbles that make laying rock difficult. Cement products are safe for pond use. Some people with expensive Koi prefer smooth surfaces so the fish can’t cut themselves.
How do you clean a concrete fish pond?
Use a water hose to spray down all the concrete surfaces of the pond, brushing and scooping away any debris. Be sure to remove any loose cement bits from the pond during cleaning. Refill the pond with clean water, treated with your usual water conditioners for fish health.
Will vinegar kill pond fish?
While adding vinegar to your pond will lower the pH and kill bacteria, it can also kill your fish and plants if the pH drops below 6.5.
How deep should a fish pond be?
The best depths for koi and goldfish ponds are anywhere from 4 feet to 21 feet deep. Four feet of water will prevent excess water evaporation and keep predators from eating the fish. Steep, hard-to-climb banks will also deter predators. In warmer climates where the pond will not freeze, 4 feet is plenty.
Can you put concrete in a pond?
Concrete ponds. The most common way to construct a concrete pond is to use concrete walling blocks for the sides. These are skimmed with cement mixed with sharp sand and a fibrous reinforcing material. Alternatively, a pond can be constructed from shuttering and poured concrete but shuttered ponds are prone to cracking …
How do you waterproof a concrete pond?
A: The polyliner isn’t necessary to waterproof the concrete, but if you must, I would suggest using a product like Thoroseal, which can be found in most construction supply stores. It’s a cement-based product and does a good job of weatherproofing. You apply at least two coats to the concrete surface.
How thick should concrete be for a pond?
The concrete should be 4 to 6 inches thick. Once the dimensions are established and an outline laid out, dig out the soil for the entire pond. Forms must be built in place to hold the concrete while it dries and cures.
Do you need to seal a concrete pond?
However, concrete is a porous material and can eventually leach lime and other chemicals into your pond unless you seal the pond with a waterproofing compound. The market provides different products that provide a flexible, rubber-like, waterproof coating for your concrete pond.
How much does it cost to build a fish pond?
Fishing ponds have some of the most variety since different types of fish require different environments. A standard pond costs between $1,500 and $9,000. The factors that affect the overall expense the most are the pond’s size, shape, depth and what kind of fish the owner wants to have.
How do you fertilize a concrete fish pond?
A fertilizer platform positioned one foot under water can be used to hold granular fertilizer off the bottom. Pour fertilizer or place open or slitted bags on the platform. The fertilizer will slowly dissolve and be distributed by water currents. A platform measuring 45 square feet is adequate for a 5- to 10-acre pond.
Can I put cinder blocks in my pond?
The idea that concrete blocks can change the pH in a pond is a very old myth. It was once an extremely popular myth. Less so these days. You can use the block without concern for pH, lime, etc.