http://www.poly-bio-marine.com/polyprod.htm

Anyone run poly filter through their reef?
Do you do it once a week, or 24/7?
It's a very expensive product. How long does it last b4 it need replacement? I'm thinking about putting it in my caulerpa sump and skip out the skimmer. According to Ron Shimek, the skimmer is not very capable of removing significant amount of heavy metal. Unless you can harvest large amount per day, caulerpa is not capable of taking out much heavy metal. So, that leave the poly filter to absorb out the heavy metal.