Water pump running

how long must i run my water pump during the day or is it better to have the pump running like 15min every say 6 hours?

Well if its something like water farm I believe many have said 15 minutes every 2-3 hours. If it is aeroponics you can run for 3 mins on & 5 mins off. However some people run the aeroponics systems 24/7. You may want to check the journal from unity. He has a waterfarm system & was having some problems with watering. but he figured it out.

I use waterfarms.