How do I get rid of green covering on pond
Howlis wrote:
I have a pond which is nine years old, fitted with a
home - made biological filter and the pump runs 24/7 ten months of the year,
the water is crystal and I never have trouble with green water.
How did you make the biological filter, please?
Hugh
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Hugh Newbury
Running Mandrake 9.1 in deepest Dorset
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