Hello everyone-I have introduced myself here before, but have been a very sporadic poster and mostly just a lurker. I have decided tho, that I would very much like to get into irrigation work. Right now I am a solo lawn maint operator have been for nearly 19 years. Two devastating thefts of my equipment in 06 has left me looking for different and more profitable work-but still related to my field. I have done a lot of irrigation repairs for my customers-put in new pump (had electrician do wiring upgrade/work), taken out indexing valve and replaced with individual zone valves, added a zone to a system, replaced screens on intake lines going into canals, repaired valves, pipes, heads, etc. I have always been "afraid" to post here because so many times I see you guys say "let a pro do it", but I very much want to become a pro and the only way I know how is to actually get in there and do the work. But I also know that there can be a lot more to it than I realize, and I need to be able to ask questions. My irrigation shop is very helpful, but I want to utilize all the resources I can so I would like to be more active on here. (I can even contribute to the football banter because, besides my dogs, football is #1 here with me-2 TVs in living room going @ all times during the season) Anyway, back to the subject: I take this very seriously-I am not just looking to make more money-I want to do it right or I might as well not do it. I not only want to do it right, but fully understand why it is right. I have an extensive irrigation library (Turf Irrigation Manual and Trouble Shooting Irrigation Control Systems included) and am currently compiling a ring binder with anything irrigation for my van (different nozzle data, pump data, manuals for all the different controllers I encounter, valve info, troubleshooting guides, friction loss charts, and anything else I come across that I think will help me. I realize tho that experience is probably my best teacher-in fact, I probably would not understand a thing in my books if I had not already "dabbled" with it in the field. So, with that long winded re-introduction, here's my first question/dilema: this pressure tank system is leaking where the pressure valve connects to the pump (in fact you may be able to see the drip in the pic). I am thinking I should replace all the galvanized parts making up the T there. (the prop. owner removed the pressure switch cover) Is that correct or overkill? My second question is-is the pressure tank even necessary on an irrigation only system? I realize that is probably too general of a question and you guys may have to prod me with other questions. I can tell you that the pump is 5HP, going into a lake/pond less than 20' away with approx 5' elevation difference. The property area being watered is approx 3 acres (not sure of the flow demands of each zone-all rotors, by the way) I have no intention of taking out the pressure tank set up-I just want to understand why it is necessary or helpful. By the way, there are no QCs or hydrants. I respect all of your knowledge and experience and would greatly appreciate any thoughts or guidance you would allow me. And I promise to keep my posts shorter after this!