dl,

Have you looked into the sprinkler heads that spread water in a rectangular shape? Are your heads up against the house or in the middle of your planting area? Aloha

Line pressure comes from the water supply line. Adjusting the nozzles won't noticeably change the pressure on other nozzles unless the circuit has too many heads. If these are circle pattern heads; you might look for strip nozzles but you may need to move them.

Thanks for all the replies. I'm having trouble finding sprinkler heads with a spray distance that will work. I have seen that there are converters that will change your standard sprinkler head into a drip system. These seem like a cheap and easy solution to the problem, but how well do they work? Do they work with any standard irrigation system? My system allows for a maximum of 99 minutes per station. Will that be enough time for a thorough watering under a drip system? Or would I be better off just hooking it up to a hose (that would only work for one of the beds)?

By the way, the heads are up against the house.

dl,

How about dropping the pressure with an inline pressure regulator to 10 psi just for this bed and then adjust the top screw after that? What is your operating system pressure? Aloha