Just setting up my greenhouse with the watering system. Do I need to run the 13mm pipe in a return loop, what is the benefit of this, and what is the disadvantage of not having the pipe in a loop?
Hi - if you run a loop, water will get to the furthest point faster as water is coming from both ends. If it's just a single line outwards, then the furthest point only has water coming down one length of pipe. Not a big deal if it takes longer to push the air out ... but all the drippers/sprayers will get to full pressure sooner in a loop.
