Well the Lee counter current skimmers and the Sanders conter courrent skimmers all powered by an air pump do work just fine for the price its hard to beat really. They do work unlike a seaclown. Its important to keep the limestone air diffiusers clean and changed out when necessary, and water levels topped off. I kow whats a 40 bucks tolots of foks here but I remember times I had problems scraping together 10 bucks. So personally I would not be afraid of Lee counter current or Sanders counter current skimmers one bit, as long as I knew fuill well they do require routine cleaing and changing of limewood diffuser you'll be just fine. I stil use Sanders air powered skimmers and do have 2 lee skimmers as well which are used from time to time......YOu failed to mention what brand skimmer it was that youor referenceing, and only those two come to mind.