Pumps are normally run during the day time because that is when the pool is generally used and in a lot of situations the neighbors wont be disturbed by hearing it. However it makes little difference when you run the pump.
Pool pumps are built to run rain or shine, day or night, or all the time. Depends on your particular useage.
The amount of time the pump should run for any pool will depend on a few things. Hotter seaons will require your pump to run about 8 hours. Running your pump in hotter seaons also require that the pump runs during the hottest part of the day. You may cut the hours to about 6, or as low as 4 during winter. Please keep in mind "bather load" or heating the pool in the winter can effect the hours your pump should run. During winter pump should be ran at night to avoid freezing of pipes
5 hours
Around 2 hours.
The pump should be mechanical, mine is a 350 and it is mechanical, I should know it just went out last night
No it doesn't, Night time heatloss is a big problem for pool heaters, as your pool pump runs it moves heat away from your pool, so you actually increase the night time heat loss by running your pool pump/heater at night. The most economical solution is using a Solar cover and leaving your pump off at night to prevent night time heatloss and then just fire up your heater when the temperatures begin to come back up to daytime levels.
Things That Go Pump in the Night was created in 1990.
Should be about 3 hours labor.
It depends on your experience and a car you have. Some cars have water pump very easy replaceable. Other cars (most of them) have water pump behind the timing belt. It should take you from 2 hours up 6-7 hours.
About 2 and 1/2 hours.
6 hours
If the pump is the only source of water movement and air, then yes, leave the pump on at night. If there is also a filter or water motion device, then you can likely turn the pump off at night. Air pumps can be quite loud if the tank is in your bedroom.