Ben don't know what your trying to accomplish...but keep in mind on the real close water there's likely a high chance say a diaphram pump ( or other type ) may be the way to go with solar.
Reason is, Highest individual cost on solar is panel cost...takes about $1,100 per panel installed, sooo need to find the most output pump for optimal cost of panel juice.
Takes a few phone calls to get it right the first time sometimes...just depends on what your tweeking.
What kind of float do you have on water troughs?
