New answers tagged indoors
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To me, you have a healthy, rootbound plant. I'm in the northern US, and at this time of year my spider plants stop growing and begin looking a bit like yours. I attribute this to poor light levels (they're in a basement window that is made of glass blocks, not glass, so light transmission is very poor, especially after it snows a lot). They always come back ...
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It seems these are small, 12 inch fluorescent bulb fixtures? I don't think you can significantly increase light output with those, just by putting in different bulbs.
Even LED replacement bulbs in that size have a max output of about 500 lumens. The minimum light intensity for growing plants would be about 3000 lumens per square foot. 7000 lumens/sq.ft. ...
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