ppf is just the measurement of efficience of light emission at a certain distance from the light source, all kind of light will have a different ppf value at different distance from the light source .... LED are more efficent than HPS,MH,CMH, FLUO or incandescent light for exemple, for the same watt, ppf will be higher.
the more you get far from an artificial light source the more ppf value will decrease.
they are definetly not much different than regular everyday led bulb, just slightly different spectrum (most prolly a mix of more 3000K than 5000K leds), that doesn't change that much for the plant ...
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what's important is they are 9W LED wich is not enough. The one with many arms is 15-20W watt i checked for another thread few days ago on amazon. and i have no idea about the one in circle but obviously not much Watt as well.
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you'll get some buds that you can enjoy, most prolly airy and larf, but don't expect big dense and compact buds, you want more light power close to the buds to achieve that resultMy only issue now is if you look on the bottom of the plant, you’ll notice smaller buds.. the main stalk looks nearly done while the lower part looks like it has a ways to go. With white pistils growing more and more, the bud gets fatter and fatter.. but now I see these micro buds.. will they be as good as the main buds?