Well I'm not saving too much, it really uses 395w and I was using a 400w Super HPS with a digital ballast before. I basically wanted to say I was using an LED at least equal to a 400w HPS just in case they were not as amazing as they said. But it beat my expecations by a good while and I realize now I should have settled for a 180w or a 290w for my 2.5 x 2.5 x 6 tent
But the nice thing is that it makes only maybe 20% as much heat as the 400w HPS system did. So my growing window without the use of an air conditioning machine doubled from 4 months with the 400w HPS to at least 8 months with the 395w LED (if I had gotten a more appropriately powerful LED I could have been growing all year!)
*tent vents into bedroom which always has door and heat vent closed, so the only air comes from the window however far its open (depends on how near or far from summer)*didn't want to risk neighbors suspicious of whatever
But the nice thing is that it makes only maybe 20% as much heat as the 400w HPS system did. So my growing window without the use of an air conditioning machine doubled from 4 months with the 400w HPS to at least 8 months with the 395w LED (if I had gotten a more appropriately powerful LED I could have been growing all year!)
*tent vents into bedroom which always has door and heat vent closed, so the only air comes from the window however far its open (depends on how near or far from summer)*didn't want to risk neighbors suspicious of whatever