How do I calculate pump size for low pressure Aeroponics?

[Matias]

How can I calculate the water pump size I need for these sprayers?

http://www.amazon.com/dp/B007D2RX1C/?tag=pfamazon01-20
Flow rates : 31.2 GPH.

The current system I'm trying to figure out the pump for has a center rezzy and it needs to feed aprox 10, 10' pipes with diametre 1''. I have 108 sprayers.
submersible pump I need to have minimum of 3300 GPH?

Anyone knows how to do this or knows a sub I could post and have a better chance of getting help?

 

[CWatters]

The link says 31.2 gal/h when fed at 20psi. So yes you need a pump capable of at least 3100 gal/h at 20psi. There will be some pressure loss down the pipes but I think that will be minimal if they are only 10 foot long.