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Don't forget to mention the differences in bulbs when it comes down too lumen/watt and proximity to the light source.
You cannot get a plant close to HPS or MH as we all should know.
But with fluro's, especially the tubes types not the spirals you can allmost stick the plant inside the tube because it does not get hot.
(just make sure you put the tubes in observing correct polarity!!! or else the tube's ballast is gonna get cooked (but the tubes do appear to work normally FOR YOUR EYE thats the culprit here) : ESPECIALLY TRUE with multile fluro's in close proximity.
If you connect 2 fluro's next to each other in opposite polarity, the electric fields the tubes produce will put the brakes on each other = far less light & far more heat)
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