I had to send the seio's back to foster & smith. One of them barely worked, and the other one kept shutting off. If I wiggled the cord a little, it would come back on. I didn't want to fry anything in the tank. I was afraid to order another one after that. I told them to exchange them for more maxijets.
I discovered something in the tank today. It is a pale pinkish color with a lot of legs and claws. I took some pictures of it, they're uploading now. Will post a picture in a few minutes.