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stevep"Midi Sieve advice" 5:12pm Thursday 25th Oct
joined: 7th Feb 10
last here: 10:20am Friday 22nd Mar
posts: 244
from: Barnsley

One of my bottom drains returns to a midi sieve. It’s never been an issue from when it was installed. For the last couple of weeks though the sieve side has started to fill with water, it’s to about half depth of the weir side which is obviously stopping it working as it should. Does anyone know what adjustments I need to make to rectify this please?

Thank you

YKS moderator team..
"RE: Midi Sieve advice" 7:37am Friday 26th Oct

joined: 8th Nov 12
last here: 7:53pm Yesterday
posts: 776
from: York

have you checked your pipe work/pumps to make sure there are no obstructions?

I have never used a sieve before so not entirely sure about their workings.


andikoi"RE: Midi Sieve advice" 8:11am Friday 26th Oct
joined: 8th Aug 13
last here: 11:24am Saturday 23rd Mar
posts: 638
from: wakefield,west yorkshire

have you tried cleaning the screen,brick acid works well,brush on then use a scrubbing brush then jetwash off,andi

new pond in progress,5000g 2 spindrifters,1 to kc-10 drum and 1 to nexus 200 both returning over momotoro bakki shower with 70kg of bhm

YKS club member
"RE: Midi Sieve advice" 2:26pm Friday 26th Oct

joined: 8th Oct 14
last here: 11:07am Friday 7th Dec
posts: 145
from: North Notts

Hi Steve

I've an U/S 3

1. have you changed the flow rates from the sieve
2. if you have, you may have to adjust the flow rate control. (my U/S 3 has 3 setting for different flow rates, look at U/S instructions how to do this)
3. if non of the above - remove the float - bit of a hassle - empty all of the water out of the float and refill to correct amount. (the float plug could have become loose and allowed water to fill it)

Let me know have you get on.(don't forget some good isolations if required)



YKS club member
"RE: Midi Sieve advice" 6:10pm Friday 26th Oct
joined: 22nd Apr 14
last here: 7:25pm Friday 22nd Mar
posts: 649

could not have said it better.
stevep"RE: Midi Sieve advice" 6:53pm Saturday 27th Oct
joined: 7th Feb 10
last here: 10:20am Friday 22nd Mar
posts: 244
from: Barnsley

Thanks Mick,

No change in flow rate.
It must be something to do with the float. I’ve downloaded the instructions and its looking like removing the float to empty it and then take it from there.

Thanks again and I’m keeping my fingers crossed.


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