I got another one today. Same model since it was the only thing they had in stock with enough of a flow rate.
First one I had was quiet of of the box, then after about two weeks it started to make a light chattering sound, as if there was a small piece of debris being tossed around by the impeller, and got louder over the next week and a half or so before the impeller broke. I didn't realize it because I thought it was louder because it was vibrating on the side of the rez, because when I would pull it over i bit it would quiet down.
Hooked up the new one, and it sounds like the previous pump did after a the first two weeks. The local shop said that he is going to order some impellers since it's a common complaint he gets about the ecoplus pumps. Said the build quality is hit and miss, and that they can last a year, or last a day. Doesn't know how much the new impellers will be, but shouldn't be much. The ecoplus site has them listed at like $5-6. Told him to get me two of them. One to fix my pump, and one as a backup. Guess I should have gotten more.
Looking at the manual, I did find out how to go about the warranty, so I may just take the pump to a retailer to get a replacement.