Stephan got in the lights he plans to use for aquaponics. They are called metal hallide lights. I thought they were going to be LED lights, but they aren’t. They are high pressure sodium. I don’t have any idea what any of that means, but the important thing is that these suckers are BRIGHT when they are turned on. Almost blinding. And they’ve got that foil around them to reflect the light, too.
They aren’t lower energy like LED lights are, but they are definitely high output.
He’s got two of them, and he thinks that will be enough for the 96 square feet of grow bed space he has. But much experimentation remains.