Put a 300 cfm blower blowing directly on top of your magnetic coils and get a reading. I dont appreciate being called a liar man. Listen we both have a 400 grow going right now. My plants are 45 days old and my ballast box has not gotten hot to the touch. Your goin vert to in a nice setup with expensive equipment. Lets see whats up. a little friendly competion to see who can get the highest g per watt ratio i know this is depends on strain alot but lets just keep it day to day and compare results. Heres my thread ill be following yours. https://www.icmag.com/ic/showthread.php?p=3981128#post3981128