It became apparent to us during our research that the majority of solenoid valve systems operate one valve at a time. This not only gives us very little reference for creating a system that operates two valves simultaneously, but also brings to mind the idea that our system may be made more straightforward and simplistic if we were to use only one of our solenoid valves. Using one valve is not a definite decision at this point but rather something we will consider once the breadboard arrives.
Figure 1: A picture of a breadboard operating a solenoid valve using Arduino (courtesy of www.martyncurrey.com).