Those sprinklers sound really efficient!
Ok, not as bad as I thought. I forgot about the shape of the tank being a cylinder shape on it's side. The beginning and end go fast as vertical level. It has gallon markers and I saw this morning that it's just under 160 out of 200 so I used about 45 gallons, half what I was thinking.
Still almost an inch of watering based on how long they ran at their rated output. They do put out a surprising amount of water for their size.
90 gallons had me freaking out thinking about how much more sq ft the tunnel is. At 45 gallons, four IBC tanks for it will give me four watering sessions like above. Drip uses a lot less and is mostly what I'll be using and it will always be mulched. I'm guessing 8-10 drip sessions with four full IBC tanks. Definitely won't make it through no rain for over a month but I figured that.
Went out in the dark and hooked up my soil moisture sensor and stuck it in the raised bed last night and will be monitoring the readings from it compared to observation. Next time I water, I'll stick it in a different bed where it will be in soil instead of that raised bed mix. I'll stick it in at an angle so it's reading the top 1 inch in the bed I'll be seeding today with Bok Choy.
Time to go rake and burn and rake and burn. At least want to see the driveway and clear out under the high tunnel frame welding area. I work tomorrow and then have Tues/Wed off and have no other pressing projects so I think I'll actually get them welded up. Then I have Sat/Sun/Mon off to paint them and get them in the ground. I'll probably just paint the top/arch part so we can handle them as it's going to be mid to high 50s, just warm enough to paint but may be slow to dry/cure since I'm using rust-oleum enamel from the gallon. They will be sprayed, not brushed so that helps.