How do I stop the water in my pond from turning green?

Question

During the summer the water in my pond became very murky and green. The pond is 8x6 feet. and I have about 20 goldfish in there. I emptied and refilled the pond but it quickly went green again. Can anyone tell me what to do. I used to have water lillies on the pond but I took them out as they were badly overgrown.

Answer 1

algae grows and thrives in water that gets lots of sun. by removing your water lilies you have exposed more of the water surface to the sun and thus encouraging more algae to grow.
Tho this will not harm gold fish, if you have Koi the algae will compete with them for any available oxygen in the water.
You can purchase an algaecide specifically for ponds with fish - will not harm the fish - that is very effective.
BTW: Never empty and refill the pond as - you are removing beneficial bacteria etc that will have to rebuild again in the new water. Good luck and happy ponding

Answer 2

The green is algae. You have a couple of options, which have been listed above. 1) you clean it often, which negates the possibility of having fish. 2) chlorine, so no fish, birds, or wildlife should drink from it. 3) increase oxygen content, which reduces the ability of the algae to reproduce so well. This is done by the obviously favored method of making the water run, such as a fountain or a bubbler. You can also make it fall down rocks, to really force water into the pond. 4) fish. Some fish species eat algae, but doing so means you'll have to keep thinking of things all through the process, such as "Is the pond too warm?" "How do I keep the pond from freezing?" and "What is there isn't enough algae in there? Do I have to feed them now?" Good luck with your decision!

Answer 3

During the summer the heat of the day turns the water stagnant and algae begins to grow.

You need to install a small pump to circulate the water I would suggest a solar panel to power this system so it will be free power with only the cost up front

hope this helps also you may want to look into some vegetation to feed off the algae left over

Answer 4

your problem is too much light, no matter what else you do you'll continue to have a problem unless you figure out some way to shade your pond, re-plant your lilies and any other plants you can get, cover 75% of the pond surface, plant shrubs or small trees to shade the pond, build a frame over the pond and cover with shade cloth or build a gazebo over it
anytime you empty and refill pond you cause an algae bloom
do you have any kind of fountain or filter, if not, install one
add some aquarium salt to pond, it will help a little (or you can
use rock salt - icecream salt) - use 1 lb per 200gal
good luck

Answer 5

Use a pump to send the water through a filter. You could incorporate it into a fountain which will put more oxygen in the water. If you use a sand filter, you can scrape the green algae off from time to time and compost it.

Answer 6

Get a water filter and pump, and put some plant life back as it uses up the nutrients that make the green algae form. You can buy Barley Straw at garden centres that helps as well.

Answer 7

The green is Algae and will always grow in still water. Get a filter or aquatic life that consumes it.

Answer 8

There's a chemical you can buy to dump in there that will kill the algae without hurting your fish. It also turns your water a crystal blue. Try any fish store or home and garden store.

Answer 9

you got to get the balance right, with three different plants, oxygenators, marginal and the other one I cant remember, but water lily group, also water snails help keep it clean. good luck
i've never used a pump and my water has always been clear

Answer 10

YOu'll need a good filter system and if you install a waterfountain to keep the water moving....you'll see less Algae. Good luck..