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in our garden we have a small fish pond, app' 4' x 4' x 2' , there's a water lily and 2 koi carp in there as well as a small fountain/ filter.

my problem is that over the last few days i have noticed a lot of white, frothy, foam appearing on the surface, which i have been removing by scooping it off the surface with a small fishing net.

it seems to get worse the warmer the weather is, i was wondering if there are any fish / pond keepers on ukcs that may have an idea of what is causing the problem and how to cure it, my initial thought was that there must be some kind of aeration problem causing the fish to gasp in warmer weather ,thus causing the foaming. as warm water holds less oxygen than cold but the pond pump is running continuosly and the water surface is constantly moving.

any ideas anyone ?

cheers WP,will pop on and have a look

Quote: Originally posted by jeff juke on 12/8/2012

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Pete,when you come home from the pub use the loo in the house.

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would make a change but theres no better feeling than getting ya tackle out and letting go in the open air 

I had the same with my pond and it was an airflow problem. Not so much warm weather, it is to do with air pressure and it tends to show worse just before or after a thunder storm.

Remedy:- Squirt the garden hose into pond at full blast whilst squeezing the tip, thus generating a lot of bubbling water in the pond. It will stir all the muck from the bottom but will soon settle again.

You can buy airation plants (check on pond size as some will become a weed and you will be forever dragging it out).

A fountain or waterfall will also keep turning the water over adding air

Quote: Originally posted by jeff juke on 12/8/2012

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Pete,when you come home from the pub use the loo in the house.

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