I am currently running 100 micron (nominal) felt filter socks in my sump. I still see a lot of particulates in the water, especially up near the lights. Because of this I have decided to switch to 50Micron (nominal) felt socks since I only need to change them about every three weeks at this point. Aside from changing the socks more often, could this cause any other problems?
This was an interesting find on how the socks/ bags are rated.
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Nominal vs Absolute Micron Ratings
Most filter bags are rated with what’s called a “nominal” micron rating, meaning that a percentage of particles larger than the specified micron rating will pass through the bag. An “absolute” micron rating will filter 99.9% of particles at the specified micron rating.
Absolute-rated bag filters are significantly more expensive when compared to a nominal-rated bag filter. For most applications, using a nominal-rated filter bag allows for users to achieve the desired end result or product at a much more affordable cost.
This was an interesting find on how the socks/ bags are rated.
Filter Bag Micron Ratings Explained | PRM Filtration
Micron ratings for bag filters. What micron level should I use for ________? Nominal or Absolute Micron rating? Common materials and approximate microns.
shop.prmfiltration.com
Nominal vs Absolute Micron Ratings
Most filter bags are rated with what’s called a “nominal” micron rating, meaning that a percentage of particles larger than the specified micron rating will pass through the bag. An “absolute” micron rating will filter 99.9% of particles at the specified micron rating.
Absolute-rated bag filters are significantly more expensive when compared to a nominal-rated bag filter. For most applications, using a nominal-rated filter bag allows for users to achieve the desired end result or product at a much more affordable cost.
