I have been doing a bit or research on filter socks as I wanted to try and get some of the debris out of my water and so decided to try and make my own. I used craft felt, created a tube that I thought looked appropriate and then slipped it on to the down pipe into my sump. It seemed to be working ok for the evening so I went to be and when I woke up my sump had lost about half it's water and the carpet was quite wet.
I am not sure what I have done wrong. My return pump only has one speed so could not change that.
If anyone could start me off on where I could have gone wrong then I would really appreciate it as there are probably lots of things I have not considered.