11 watts / fixture is huge it represents over 30% out of spec, That is like claiming you have 45 PPFD at 12 inches but only having 30.
If you check out my thread on light values you will se contained within the spread sheet I have listed some measured electrical parameters for various lights for your reference.
If you check out my thread on light values you will se contained within the spread sheet I have listed some measured electrical parameters for various lights for your reference.