11.5 — Why drippers block: sand, lime, iron and slime
Notas do episódio
A dripper's water passage is under a millimetre wide, and the crop guideline tolerates twenty-five times more iron than the emitter does. The clogging hazard numbers, the one-tenth filtration rule, choosing between screen, disc and media filters, and the chlorine-and-acid maintenance that keeps lines alive.