[Seacrets]

A human hair is 50-70 microns. A spin on filter is not only for tank junk but water. A racor has a drain for water removal. You northern guys especially will condense water in your tanks if you don't keep your tanks full just from temperature changes. I don't rely on just a small inline filter. I once had a brand new 100 gallon tank installed and gassed up at my marina. Out of 100 gallons, I had 11 gallons of water. Fortunately, I only had to rebuild the carborator. A good spin on filter is well worth the money. Just my $.02