Re: "Hardware Store Tubes"

Hello Roger: "Helps With Calcium Absorption.", and "All Birds indoors Need Some Type Artificial Lighting." CRI 96, 95 or 98 for 5000, 5700 and 6500º Kelvin respectively. And a graph of SPD http://www.mmlights.com/Lumichrome%201XZ.html As Dan said, the Philips tubes are cheaper. Jose Bueno