Have 3 Wav pumps. 2 are about 14mths old. One was acting up and paid $70 for Neptune to send a new one which has never seen water. Meanwhile did cleaning and got it to work fine again but still not 100% sure on it hence the discount. Also included is a 1 link module with power so everything you need to get these up and running on your Apex system. Very powerful but way too much for my 80 gallon tank.