NeoMorph wrote:
Just goes to show.. when installing an irrigation system ALWAYS make
sure your soil is either free draining or if not (like my thick clay)
to work out the lowest point and then run some sort of drainaway system
to your main drains.

I would have thought one of the major objects (selling points?) of an
irrigation system like this is that it doesn't waste water. Needing a
'drainaway system' suggests that you are overwatering surely.

--
Chris Green