full disclosure, i am brand new to rachio and managing my own irrigation. new home, new system, early learning curve stage.
one of our perennial beds has drip installed. its rainbird hose. packaging says .9 gph with emitters every 12". unfortunately its all buried in mulch. best guess is there is ~350 linear feet of hose down over ~830ft2 of bed with ~30 emitters.
google says .9gph = .015gpm
using the formula rachio support sent me to determine PR for custom nozzle setup, this is what I’ve got.
PR = (96.25(30*.015))/830 = 0.05218373493
am i doing this correctly?
when i emailed rachio support back to confirm I was on the right track, Jared replied “Typically, 1 GPH equals approximately 1.60 in/hr. So if your drip hose is 0.9 GPH, then it should be close to 1.5 inches/hour.”
so now i’m thoroughly confused. what am i missing?