I'm using the Red Sea Deluxe Skimmer but I can't really answer your question as I'm soooo new at this. I just set up my tank last Fri. I bought mine from a pet store that was going out of business. They claimed that items over 100.00 were 50% off and this skimmer was originally sold for 200.00. I was sure that they marked up the price just to get the original cost. I asked them to check the price, was told it really sold for 250.00! B.S. I did pay the 100.00 anyway because she threw in a few items and the LR was a deal. I checked prices online and found the range to buy it was 100.00-130.00. Is this what you found?