Eheim 1260 Owners

[Canadian]

I just bought a used Eheim 1260 that has a crack in the housing. The seller reported that they had the pump "checked out" and that the damage was only cosmetic.

I submerged the pump in fresh tap water and tested for voltage leak and got a reading of 12 V AC. This seems quite high to me but I'm not sure if it's a consequence of the pump housing being cracked or if it's typical of this pump.

What I'd really appreciate is if someone with a 1260 could test their pump while it's submerged in a bucket with tap water?

I don't actually intend to run the pump submerged anyway though. I plan on running it externally as a return pump but I'm concerned that if the crack has something to do with the voltage leak then the crack might also lead to water leak eventually (how unfounded that concern is I'm not sure).