I have tried 2 different solar panels pumps and both have broken. The Pond is about 12 feet long by 5 feet wide. The pond is about 100 yards away from the house so I could not run an extension cord.
Oh, 100 yards!
That's pretty far away.
Curious as to why you dug it so far from the house. Most people want their pond within view of the house or at least in view of their immediate back yard.
I guess you had your reasons.
What broke on the pumps?
Were they both the same model? If so, maybe they were not the best quality.
Did the pumps die or was there a problem with the solar panels, batteries or charging system?
Maybe you can research a better quality solar pump.
If it were me, I'd run a conduit underground from the house, but I'm an electrician and know how to do that.
Any chance of highering an electrician?
Any chance of moving the pond before you fill it?