Hi all! :D
So a 400 watt HPS will put oout 45,000 lumens. A 600 watt HPS puts out 95,000 lumens. And a 1,000 watt HPS puts out 145,000 lumens.
This means a 400 watt HPS produces 112 lumens per watt. A 600 watt HPS produces 158 lumens per watt. And a 1,000 watt HPS produces 145 lumens per...