I actually don't use that pump anymore though, and don't recommend this design to someone who would be using a solid-state pump. I don't think the pump was water proof and when it got wet it stopped working. I thought that because it was a solid-state pump it would make less noise, but I was wrong, it knocked pretty loud until liquid got to it and then it would quiet down. I think those Walbro inlines or even a more expensive Aeromotive or Summit one would be better suited, just stay away from the solid-states because they make more noise. I like the fact that it ran on 12 volts, in fact the pump I'm using now is still a 12 volt pump, but it's not as small and pulls a few more amps then a fuel pump which isn't a problem because I use a speed control to adjust the flow rate. Here I'll show you what I'm up too now with my new design.
This is my new pump; It's battery powered and attached to a charger so when the voltage drops in the battery, the charger kicks on and charges it up. I also connected it to my hacked Green Genius timer so I can adjust the on/off time, but that will soon be replaced with a basic stamp and the HB-25 speed control you see in the picture.
Here is my ballast, powersupply and speed controls for my 12 volt intake and exhaust fans.
This is my 400 watt HID light with the 12 volt fan that I use as an exhaust and the two aeroponic bins.
I use fountain foggers on 24/7 in the bins with untreated water and then the 5 gallon bucket has the nutrient water in it and comes on 4 times a day to feed the plants. It's much more energy efficient this way, and I save a lot of nutrients.