[RickeyD]

Originally Posted by ajbrown

Some time in the past I discovered an interesting issue at my house.



For reasons I cannot recall, I woke up at 4 AM. While up I decided to check out my sprinklers.



They were spraying very weekly. Not far enough to get proper coverage.



What I learned was that the pressure can change quite a bit for reasons I never investigated. I changed the time so they now end at 7AM and pressure is great.



I put a pressure gauge in the box (as I was curious) and see quite a variance of static pressure depending on time.

Had the same problem at my house in NY. I installed a city water pressure booster, set it for on at 50psi, off at 70 psi. Now I can run ALL my sprinklers simultaneously and it looks like a golf course during sprinkler running time. Very impressive with impulse heads.

[BarbyM]

2 hrs is a very long time unless you have a massive yard with lots of zones. When I moved in 2 yrs ago I called the water company and they told me what days to water according to my address and it was not the same as the previous owner had it set for. If you do water early in the morning and you are not up you will have to do a system ck to make sure all the pop ups are working properly. Sometimes they do get stuck.

[keithwand]

Been in FL for 11 years with the last 3 in TV.
I have always started mine at 10:30P.
My reasoning is if it rains in the afternoon the sponge in the sensor could dry out so the system would call for water if I started it at say 2A. Plus there are 12 zones which water for 6 hours.
No fungus or mold.

[PaPaLarry]

As long as your not watering roses early (like 2 am) your fine to water early in am. Roses can get a fungus when wet all night. Good time is like 4 am, so when sun comes up at 7, it can start drying rose bushes

[Packer Fan]

Mine starts at 10:15 and seems to work fine. I think it is just important that you water at night. I agree about checking the sprinklers from time to time also.

[NJblue]

Originally Posted by keithwand

Been in FL for 11 years with the last 3 in TV.
I have always started mine at 10:30P.
My reasoning is if it rains in the afternoon the sponge in the sensor could dry out so the system would call for water if I started it at say 2A. Plus there are 12 zones which water for 6 hours.
No fungus or mold.

Yup, my neighbor did this also - despite my warning him that it could result in fungus problems. His lawn looked great and made me think what the experts were saying was bogus ... until he did develop a fungus situation within the last year. He now waters in the early AM.

[CWGUY]

Originally Posted by Walter123

2:27 AM is the best.

https://www.youtube.com/watch?v=iX3kxAA2L4Q

220/221 What ever it takes.