What watering system would suit my need

I'm doing an outdoor grow with 50 plants that are in 40 gallon pots. I have a 375 gallon tank that i plan to Use to water them. I need a system that uses gravity to water them all. Something that i can just feed the tank and not have to water them all one by one.

Depending on layout- Bulkhead fitting to tank output -3/4-1" vinyl tubing with shutoff valve- if plants are set up in rows of 25-then Tees to each plant(3/4 to 1/2" reduction) can use drip rings or just let it flow and plug on end of main tube- main tube should be run so 1" above pots(stakes and zip ties)- open valve and water. I use similar method, but at ground level with submersible pump. Can feed and water out of same res.