Hi my name is Anthony and I have been looking to turn my 40 gallon breeder into a reef tank. While looking into protein skimmers I have seen people say 40 gallons and under don't worry about it or 40 gallons and up should have one. So what do you think? If I do need one does it need to be rated for 40 gallons? What are some low cost, simple skimmers you would suggest? Thank you in advance!