Thanks for posting the pictures. I was thinking of something similar for next year - I will probably pump water out of a pond to fill the tank, but I haven't looked at pumps or filters yet (I have the tank). I was thinking about adding a smaller size line to encircle the tree, but not sure if that would work. My goal would be to provide about 3 gals per tree per week for two weeks, for about 40 trees. Normally, I am onsite every two weeks during the summer.