It's in the water column, not on the surface. Bakpaks are a filter/skimmer combo. It's more of a skimmer, though, because the biomedia is all submerged, so it doesn't do much.
The Bakpak had been on there a while, but there was a crack between compartments that got worse, so I turned it off when microbubbles got through that crack. Now the junk is in the water... I'd say it's small enough to be classified as clay. Very, very small particles. I assume that's why they aren't being taken care of by my prefilters.
Should I just find another protein skimmer? Would that likely take care of it? It's not that bad, but if the lights are on, the particles are visible if you look closely, and it bugs me. My water used to be crystal clear.
92-gallon corner tank, 100lbs of LR
, 140lbs of sand, 250watt 10,000K MH
, 110watts of actinic PCs, Mag 7 return, custom refugium, AquaC EV180 w/ Mag 5
Female lyretail anthias, eyelash blenny, tomato clown, saddleback clown, firefish goby, 2 sand-sifting stars