Precision Marine Reverse-Flow Substrate Reactor

[loves saltwater]

Can some one tell me what this is used for ? I know where I can buy one for 150.00 without the pump.Looks like brand new/what do they cost new ? This one is about 3 foot tall and 4 inches in diameter.Thanks

[pjf]

Are you referring to this: http://www.precisionmarinedirect.com/store/viewItem.asp?idProduct=819

It is only 26" tall and is $100.