Quote Originally Posted by khyberkitsune
Excuse me, sir. LPS outputs far more lumens versus HPS, which is why it's preferred in highway/parking lot/street/airport lighting. He most certainly DOES know what he's talking about.
Really, Rusty, I also would have thought you'd know that LPS is used specifically because of the lower light pollution as well, which is why they're the *ONLY* choice of light used around astronomical observatories.
You're joking, right? I back my statements with proof from WIKI, and you want to argue. Go find something to do, because frankly...you suck at 'bickering'. I know the lamps they use in this part of our county are HPS, because I've talked to the worker that goes-up and changes the damn bulbs.

Quote Originally Posted by Rusty Trichome
High pressure sodium lamps are quite efficientâ??about 100 lm/Wâ??when measured for photopic lighting conditions. They have been widely used for outdoor lighting such as streetlights and security lighting. Understanding the change in human color vision sensitivity from photopic to mesopic and scotopic is essential for proper planning when designing lighting for roads."
High Pressure Sodium lamp - Wikipedia
You keep beating a dead horse with the bullshit, and all you'll do is keep getting shit all over yourself. Here, in my little county, HPS is the lighting used. Sorry if you have a problem with (solid) the evidence I posted backing my statement, but you have posted nothing to back your statement. If you're going to get good at this 'bickering' thing, read-up and show your proof. Right now, you look like you're grasping for retribution for past arguments. Rather ineffectively, I might add. Perhaps you could submit your understandings to WIKI, and have them change their definition and description of HPS lighting.

Just to keep the conversation on-track...I never said the other lights aren't used, but I did point-out and prove what is used. Dispute that point, or back-off. Plain and simple.

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I use bulbs from 1000bulbs, Walmart (when I was still doing 400 watters) or whichever grow store that has 'em online for a good price. As I said...frankly, I don't give a damn. If it ignites, and lights, I'm fine. I'm not a commercial grower in need of that extra 10 lumens per square foot to make my bottom line and I'm not at all worried about any of the concerns you've posted regarding the degradative effects of light on plants. But I do grow killer meds, and try to concentrate on the gardening issues that matter.

Proper lighting is essential. Perfect lighting is anal. (there's no such animal)