I am breaking down my tank so I won't be needing these any longer. 3 fixtures have been running on my tank for a year and 3 months @ 55% power. And 1 fixture only a few months, all are in excellent condition. The Radions have been cleaned and boxed up ready to ship. I'll sell each fixture separately for $600, or 2 fixtures for $1,150, or all 4 for $2,300 PayPal shipped to lower 48 US States.