Got my new set of VHO`s today so I now have 4 bulbs running. I have the actinic coming on at 9 AM and the 50/50 at 10 AM. The 50/50 will cut off at 8 PM and actinic at 9 PM. I might have to modify that the first few weeks so as to acclimate them to my tank. I also got me a squamosa Clam. I`ll have some pics tomorrow.