Babygro thinks that is rubbish then he should tell that to Jorge Cervantes who wrote Marijuana Horticulture the Indoor/Ourdoor Medical Grower's Bible. This bulb is a favorite with European growers. Jorge gives credit to over 100 differenet people who helped with fact finding. I think I can rely on his word.
Lets get clear here what's being said. I'm objecting to your insinuation that the Philips Son Agro 430w bulb was designed specifically 'to augment natural sunlight'. ie That bulb is designed for use in a greenhouse. I made it crystal clear in what I said that the 430w Son Agro is a stand alone bulb that can be used on it's own for growing indoors without any sunlight. That's what I'm calling rubbish, because you don't have the capacity to read what he wrote and understand it.
Here's what Jose Cervantes says about the Philips 430w Son Agro -
"Philips designed and manufactures the 430 watt Son Agro specifically to augment natural sunlight AND GROW PLANTS. The bulb produces a little more blue light in the spectrum."
Later on he says "The Son Agro bulbs are the choice of European growers."
Considering his book is called "Indoor Marijuana Horticulture" I think it's safe to assume he's referring to european growers using the Son Agro for indoor lighting and NOT in a greenhouse!
My point was and remains so, the 430w Son Agro is a good bulb for indoor use and isn't just for use in a greenhouse, as you insinuated.
That's your problem Mogie, you just copy and paste stuff but don't understand what half of it actually means.
And yes, I have his book as well.