The sump you have is a Marineland Tidepool sump. It is worthless IMO. I had one on my first tank that was a 58g. I would go over to River City or Aqua Tek and get either a Precision Marine or Eshopps sump. I'm sure someone already said this, but you do not need a biowheel in a salt water setup. The biowheels are made for fresh water aquariums and they are a nitrate factory. The Eshopps and PM sumps are kinda pricey though. You can always make your own or see is hobogato can quote you on one. I have seen some of his work and it is really good. I made my own sump once and it ended up looking nothing like his.