Fish?

My pond water is 'milky' this morning. Have the fish been making babies?

The fish I have were all bred in there,but I've never seen the water like this before.

 

Have you used anything like a new sealant around the pond?

Possibly could be a die-off of algae?

Milky water can be due to high alkalinity. Have you added anything which may affect the pH?

http://www.pond-doctor.co.uk/longmilkywater.html

* Tea-colored water usually results from dead plant material or tree leaves that have settled on the bottom of the pond and rotted. Activated charcoal can help because it removes tannins.
* Milky water may be the result of high alkalinity. Check your water, adjust the pH and do a partial water change.
* Green water may be single-cell algae. Add more plants, and if you're feeding your fish, decrease that until your water clears up.
* Water that is clear to blue can be an indicator of good water conditions, but don't drink it.
* Yellow water may be the result of decaying leaves. Try a partial water change and remove the dead material.
* Black water could be caused by high pollution. You might want to consider cleaning the pond and improving aeration.
* Water that is reddish to brown might indicate silt, dirt or decaying leaves. A partial water change and added filtration could be the answer.
* Red water might indicate too much ferrous iron and it's recommended that you maximize aeration and change-out 25% of your pond's water.


http://www.brdlandscape.com/pond_care.html

Not very well up on pond stuff but these are just a few ideas to play with.

Sorry I can't be more help. Not certain if this is a spawning but this describes the appearance post-spawn.....Upon the completion of spawning male and female seem interested only in eating the eggs. If the male continues to be aggressive, he should be removed, carefully. He now is harder to handle and is vulnerable because his usual protective, slime-layer body covering has been worn off, so that his normal slippery feeling gives way to a sandpaper-like touch. He also probably will fight any netting. At this time, he can be prey to fungus or disease, and best can be protected by returning him to high quality, regular pond water, possibly supplemented by Bam-O-Flavine or the equivalent.

The female should be isolated in a pond by herself, with other females, or with young koi for at least 24 hours, so she can recuperate. She will lose the spawning odor and have a chance to rest in this length of time. Otherwise, she may be subject to further harassment by males not previously involved. Watch jumping; for some reason, recently-spawned females have a tendency to jump, even when alone.

The breeding pond will have taken on a cloudy appearance and a distinctive, unpleasant odor. The "tapioca-like," light-greenish, glazed eggs are quite visible to the eye. Before nightfall, a partial exchange of perhaps half of the water should be processed to clean the pond and help remove the cloudiness. Caution must be observed to keep the eggs moist at all times. Gradually the objectionable odor will dissipate. Because the hatch now prevents normal filtration, some arrangement needs to be devised to maintain the same depth-level, while pumping out the old water and spraying in fresh, new water.

Hope you get to the bottom of it Pal!

Kath