Fairly new to the hobby here. I have a Coralife Biocube 29. It seems that the draw of the pump and filtration system isn't as strong as it should be. I can watch back by the water intake ports in the rear right of the cabinet and lots of particles drift right by the vents and don't get pulled in. I'd say only 20-30% of what I see drift by gets pulled in. Is this normal? My tank is hardly ever crystal clear.