I use carbon in my sump and then decided to look why so many reefers are against using carbon. I found this article on carbon and PO4 that you might find interesting or in my case scary..
http://www.wetwebmedia.com/ca/volume_4/V4I2/carbon/carbon_comparisons.htm
Now a couple of questions:
1) Who uses carbon and how often?
2) Marco have you done this type of study on the coconut carbon you use?
3) Out of this article, is the PO4 leaching high enough to be a problem?
http://www.wetwebmedia.com/ca/volume_4/V4I2/carbon/carbon_comparisons.htm
Now a couple of questions:
1) Who uses carbon and how often?
2) Marco have you done this type of study on the coconut carbon you use?
3) Out of this article, is the PO4 leaching high enough to be a problem?