As for the filter sock. run one for a week or two and you will see what gunk it catches. lol I would never run my tanks without one now that I know what it catches. lol It is an extra step in maintainign the tank, I change mine out every few days but I feel its def worth it in the end.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.