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I am ordering an HLG 260w qb. I see it comes with the meanwell HLG-240h driver. It has a single dimmer screw. I heard that this is a plastic cheap screw and it has a tendency to strip. Has anyone installed an external dimmer? Did it work?

Hey as you can see by my profile photo, I am finishing up my third indoor grow. I currently have 300w of CFL, and this is going to be a great harvest. That said I have recently ordered a HLG 260w v1 QB. In 3500k Only $229...

That is what I was thinking about. I think i really could figure out the math but it was making my head hurt. Ill find one of those kill a watt devices Thanks.

Ok so first off the 260w qb only has a single dimmer screw. So the multi meter is wired in series with the output leads going to the qb. I will verify the exact voltage then check the amps using the v x a = watts So if i want 37 w per sqft then I should have 3.1 amps at 120v.

So the 260 w qb has a dimmer and I am assuming it reduces the voltage to the led? If i want to dial in a specific watt per sqft say 40 watts, how would I do that?

thanks for the quick reply. So how do you tell if your light is to close? Do you think I could set the height and leave it, only adjusting the dimmer? Also should I leave the driver mounted to the heatsink (or gain a few inches by mounting it on the outside)

Retired in So Oregon.

Living in beautiful Southern Oregon. I am growing Northern Lights and we only do edibles (mostly canna caps), for a good nights sleep. (I suffer from RLS) so this really helps, and my wife has problems with insomnia. I have been growing for just one year. I am just finishing my third indoor...