Well I,m far from an expert also ... so the way it was explained to me was in a analogy... Light compared to a gun
Watts= The caliber
Lumen's or lux= The bullets
So by adding lets say four 100watt bulbs you don't get the lumen's penetrating
through the water that one 400watt light would produce. It's like shooting four of the same type of gun and expecting to get four times the distance.
Just thought this analogy would help too.
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