Arduino Powered Micro Aquaponic System with Pi Camera and Twitter Feed

We are creating an automated aquaponic system with mobile updates via Twitter. Sensors and motors will be controlled from an Arduino while the entire system, including mobile updates, will be orchestrated by a Raspberry Pi. Tweets include pictures, sensor data, and system-critical updates. Original system schematics have changed a little but not much. We only used (2) relays and the LCD was attached to the Arduino, and the pH sensor didn't make it into the system as of our due date.

Step 1: Parts List

First assemble all parts that are needed to create the system. With discounts and using items we already owned or had access to the project cost us ~$260. However, if you purchase all of the parts new and use this links below, you will be looking at a project that costs ~$450.
<p>Wow, fantastic instructable! I love aquaponics. I'm going to use this to upgrade my unit.</p>
thanks for sharing guys! great job!
interesting but why not use a regular fitting for the 120 Volt lamps. Seems safer and just as easy

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