Divorcing, moving and downsizing so I'll be parting out my 75 gallon starting with my DIY LED fixture. This thing puts out tons of PAR and is very well made. See my original build thread here:
48" LED Array - Up and Running...Mostly - Canreef Aquatics Bulletin Board
The only thing that need completing is cleaning up the controller which works but is still bare electronics and tweaking the programming which wouldn't be hard for anyone familiar with the Arduino.
Asking $1500 for it which is basically my material costs and doesn't take any of the build time into consideration.