Automatic irrigation system - almost invisible!

We have long been an automatic garden irrigation, only to the flower boxes that had to hang in the windows so far in our absence someone take care (fill up the reservoirs).

Now I got an irrigation system from the internet - a thin tube with micro nozzles. The is connected to the irrigation computer of the external water connection and are according to my instructions from the water in the flower boxes. What bothered me a lot, however, was the well-visible black hose, which sags when exposed to sunlight and when the water passes through.

I bought in the hardware store silver colored Alurohre and threaded through the hose. Now it is almost invisible. I wonder if that works well with the watering.