On 03/05/2019 14:46, Frusc wrote:

This is useful info for a novice It gives me a good starting point
and I can then adjust to my own conditions. I guess you just have to
keep an eye on the plants/soil and vary timer or the dripper
periodically.

Setting up the individual drips on a long run can be a pain - as you
increase the drip rate from one the rate from others can reduce. Set
them up roughly first so that you have flow from each one and then go
back and equalise the flow from each in gradual steps. When first
setting up first fully open the one at the end of the run to remove any
air in the main feed. Despite the name you don't want drips but a
steady flow.

Resist the temptation to re-adjust the drippers for more flow during the
year. Just adjust the frequency and period of each watering.

What can happen if you don't open up the drippers enough is that in the
summer the 4mm black tubing gets very hot, the water expands and is
pushed out the drippers and/or evaporates via the drippers. When the
timer again provides water the tubes are full of air and can cause an
air lock preventing water getting to some drippers. By setting the
drippers to give a steady higher flow tends to prevent this in that the
air is easily pushed out by the new water flow.

Try and hide the black pipe in permanent shade.

Anther tip, while construction your system dip the end of the cut tube
into a cup of near boiling water before trying to get it over the barbs
on the fittings (T pieces or drippers). The hot water temporarily makes
the tubes softer and the fittings can be pushed into the tubes easier.

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