Automated Watering System?

[Straight Shooter]

Yes i have one in the poly tunnel , it works off mains water....its a clock timer worked off a 9volt battery (they last about fourteen months ) you can control the when the how long three times per day or nite for seven days ....then its starts all over again, my kit came with 10 mtrs plastic tube and feed nipples you just screw into the tube where you want them....had mine for five years no probs
bought it on fleabay i think i paid £78 ....as prepper mindset i have not tried a header tank yet...in case mains go,s down ...but i see no reason for it not to work the pressure release valve of the unit....its about a 6" cube.....kids stuff to install !