I'm not sure what's defective on my ac110 the motor or the impeller so I was going to get another one because I wouldn't want to have to invest in a motors and impeller if I ended up getting both due to the problem wasn't just one and that comes out to be around 55 dollars to replace both parts so why not spend 10 more dollars on a new unit that you will get a new sponges media etc. on Amazon.com the Fluval 406 is $114 so which would be a better addition ? A FX5 and 406 or how I had it prior with the AC 110. ?

AC 110 65.99+tax
Fluval 406 114.00 possibly no tax.