Lorentz Solar pumps 1 gallion per minute on up. generator back up 110 or 220, float switch. low water shut off switch. i have put many of these pumps and have not had a problem with any of them. very dependable and high quality pumps and solar panels have a 25 year warranty and the solar pumps have 2 years. You can keep tank full and flow it into the pond so you can have 2 sources or water. Can also put under a pressure system so you can have multiple tanks for rotational grazing. Prices depend on how much u want to pump, you can monitor the solar system 24/7 on computer or android device, call Backhus Water Well Drilling 785 366 0035 for info. Also hand Grundfos  Solar systems, tire tanks, cattle waters, thanks for looking