Hi i have a large ornamental fish pond 1050gallons it has two waterfalls going into it.
i have goldfish, orfe carp and koi.
every winter the pond is crystal clear but, as soon as the weather warms it goes murky brown.
Is there any advice you can give me to get it clear. it is is the sun until 2pm and is due to be cleaned again as i have trees in the garden.
Is it just the fish causing this or anything else? what can i do to keep it clear?