I've recently purchased the necessary Tropf Blumat parts to build an
irrigation system. I want to irrigate grow-bags using a single sensor
and three or four distributor drippers. However, I'm finding that the
dripper nearest the sensor is delivering about twice as much water
than the next (and further ones) in line.

Have others had this problem and overcome it? I'm using a resevoir
tank only about 60cm above the grow-bags, but have only a very short
length of 1/4" tube (1m) until the thin bore dripper tubing.

On a related point, can anyone recommend a UK supplier for Blumat
parts other than Two Wests + Elliott .... they have the stock and
excellent service, but for small orders (e.g. connectors and drippers)
the P+P will be more than the order.

Thank you
David