Well after proposing it years ago and getting good direction. I have finally installed my solar water pump in my spring to irrigate my hoop house. The hoop house is 50 ft above the spring and 800 ft away and needs about 25 PSI to operate properly. These two factors made the build rather difficult due to the relatively high pressure needed at the source. I have a 30 watt panel a 115 Amp hour deep cycle with cheap charge controller. A 12 volt water pump. This setup should more than cover my needs for my drip irrigation system. The math says I need about 2 hours of pumping a week, really 3 times a week turning off and on for 1 hour and 20 mins running about half the time. The pump uses 9.8 amps at max pressure. Running amps. will be somewhat less than this closer to 8 amps as an average. Because it won't always be at max pressure. Here is a quick break down. 30 watts an hour 3.5 hours a day. or +/- 100 watts a day. 7 days a week for 700 watts potential. I plan on using about 240 watts a week approx. The water pump wont run in the colder low light months, due to freezing conditions. Does this math sound conservative enough? The math for water usage would be well off the charts for inches of precipitation and would only be that high in the hottest sunniest months. Will there be enough "left over" power to water the garden the same amount? Again this would be only during the sunniest time of the year?