After being very satisfied with the performance of my Deltec AP850 running on my 4ft reef tank, I decided to order it's younger brother the APF600. This is the 3rd smallest skimmer on the deltec's line of external skimmers. I received it from EAN on 18th Feb, a little lazy so only set it up today. I decided to do a review for the benefit of other reefers who might be keen in this skimmer. Specification: Heavy Stocking 750 Ltrs (167gals) Normal Stocking 1000 Ltrs (222 gals) Wate