How ABSOLUTELY aggrivating! I had the same problem with the impeller blades breaking off, leaving the pump totally useless! I have been sure to keep my pool clean and free from debris so there was no reason for all the blades on this plastic piece of crap to break off. I have only used my pool for 3 months.
I spent a LOT of money on my pool hoping to get something nice for my family. Was I ever wrong!
Trust me, if and when I ever find a replacement pump, it won't be this brand. What a waste of money!