Simplicity Deluxe Reef Sumps are both built to last, with reinforced tops, and an exceptional value. This company understands some of the key concerns that hobbyists have. "Salt Creep" is greatly reduced by means of the silent spill-over filter sock location, the adjustable baffle helps to maximize skimmer efficiency, and the the unique bulkhead hole cover gives you the flexibility to put a heater, or other device, in the spill-over location. These sumps come with one of the best customer service experiences we have seen in this industry. Never have we received a negative review; which is why you will find the full line of Simplicity Sumps here at AquariumSumps.com. Should you have any further questions please contact us or refer to our Reef101 Section.