I'm making a pvc watering system for my garden based off of a youtube video. I have all the pipes and I'm ready to assemble. I have a roughly 20'x20' garden and based on the video, I bought a water hose connection, a ball valve to control flow, 3/4" pipe to run down the length and 1/2" pipe to run down each of 6 rows.
My question is how far apart I should drill the holes. They guy on the video said he'd experimented and found that 1/16" holes were ideal. Granted he was doing a raised bed that was significantly smaller than what I plan. He had two beds done this way that probably came near my square footage and while they choked down with two running simultaneously, they still put out some water.
This guy didn't give info on spacing the holes, though. He drilled a lot of holes near each specific plant. I plant to space them evenly to water the whole garden, so that I can use them year after year and not worry about the spacing.
We have good pressure and the pipes get choked down from a 3/4" to a 1/2", so that should increase it some. I was figuring on trying every 8" first, though I think that might be too far apart, it'll be roughly 180 holes at 1/16" dia. I suppose if they don't have sufficient coverage, I can drill a hole between each hole and double that. I just worry that if I drill too many holes, even with good pressure from the well, that I'll end up with soaker pipes. I do plan to put each pipe as close to the base of the plants as I can, so it won't need to squirt very far, but some leeway would be nice. Does anyone have any ideas on this. I plan to drill the holes today or tomorrow. My garden isn't doing good with me hosing it down. It does soak in as well and I'm loosing tomato blossoms from watering top down. Thanks.