How quickly do the Membranes remove the food from the water?and how effective is it?

Question: How quickly do the Membranes remove the food from the water?and how effective is it?
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Asked by to Emily, Ben, Hattie, Jemma, Veronica on 16 Jun 2014. This question was also asked by , , , , .
- Emily Hayward answered on 16 Jun 2014:
  
  Hi Ninxh,
  
  It depeends how big the membranes are. If you use big ones they can remove it very quickly. The membranes I use remove 95 % of the food – this is pretty good but I want to make it even better – 100 % would be great!

Question: How quickly do the Membranes remove the food from the water?and how effective is it?