I can compare it with two other systems that I wanted to use. A connector was unable to get close,
with no Teflon tape and several attempts. I have replaced it with a Gardena connector was immediately sealed.
Basically, it should be noted that underground pipes not where
simply connect leave as the aerial plug systems. One needs
much more power and is by the black Erdschläuche very rigid
the handling more difficult. This is but also in other systems like this.
For long-term durability, I can not say anything, I just everything
relaid.