Used Seaclear System II 90 gallon Help

[BenjiBrooks]

I deemed it time to buy a larger acrylic aquarium and I ended up getting a great deal ($125) for a used Seaclear 90 gallon System II tank. Here is my problem the setup in the back of the tank looks different compared to the newer models. I believe this model is from the early 2000's. Does anyone have any experience with an older Seaclear all in one tank? The Internet is lacking on illustrations and information. Your help will be much appreciated

 

[Reefing Madness]