Trouble with Rena XP1

[paddyob]

I am trying to run this on my rock tank with some carbon but I cant get it to prime and run.

Culprits are possibly the impeller or seals. The impeller seems to be running. If I plug it in dry it turns freely and no noise.

When run wet... it seems to struggle and when it does run the output is very weak. Yes I cleaned all the parts and tried again.

Next is the noticeable air bubbles it seems to be pumping... which from what I found on the net, could be my problem. It could be a bad seal.

So anyone have any tips? Or best place to get parts in Edmonton?