I just went by gpm and have been told a honda motor is the only way to go, and after several years have not regretted it.

I got mine brand new for less than $300.00 if i remember right from TSC lacking the roll bar carriage. No sweat on that. I just mounted it on some lumber.

Any idea how many gallons the pond is?

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.