The tank stays full with just a couple of hours of sun a day!

So far, so good. I have only had it up and running for a couple of weeks, and I am surprised how good the unit works. My location only gives a couple of hours of sun a day because of the abundance of mature oak trees. I set up a 550 gallon tank with an overflow at the top which supplies a trough and faux spring. No battery so the pump only runs when the sun is on the panels. The tank stays full and my “spring” runs every day. TB, California