Re: Do any of you find use in a PAR meter?
After the last post, I did make an account there and ask about it. I haven't got any responses yet, but I'll keep a tab open.
I also tried the two "specialty" stores I know of around here. One, I was surprised to learn, didn't even remotely know what it was. The other said they had actually thought about buying one to rent out recently, but that they thought it wouldn't be worth the risk.
It's all right, anyway. Most lights useful specifically for plant-growing have PAR ratings, either included by the manufacturer or, in some cases, recorded by a reviewer.