If you will list specs of your controller, such as is it 12/24v, 20 amp, MPPT or just PWM type. If you'll list specs I think I can help, but to start with, a single panel rated 100w is not enough for an 80w pump unless you are wiring it direct to pump (DC) but your pump is AC so you can't do that.
If your setup is 12v you have to be very careful about wire size, 24v-not so much.
It's not too bad figuring all of this out, we just need some info on your controller.
It is 12v, 10A. I don’t know if it is MPPT or PWM... I didn’t see that anywhere. It came in a kit... thunderbolt magnum from harbor freight. The wires in the kit look like 14 or 16 gage braided wire... I was wondering if that’s enough. I was actually considering trying to return the pump I have and getting a DC pump that’s about 60w. I think that may be powerful enough for my pond and then I won’t have to get more panels. Would that be wise or are more panels the way to go?
