Simply Koi and More Koi

hi bob its always done it .it will cover about 3in from the bottom of the screen and work its way up to near the top by 10 days i clean it with a jet wash evry wednesday . ive phoned ea again today but the chap who deals with the sieves is off ill for a few weeks but they have told me to take some p...

help! i need some advise on my cetus sieve. the sieve fills up with water ive been in touch with ea who said clean the screen
with a jet wash which ive done but it still fills up any ideas

theres about 100 ltrs of kaldnes and two sacks of alfrgrog