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Understanding Lumens Ratings on GE Daylight T12 Tubes and Heliamphora Temperature Needs

Lumens Per Bulb

2,900 lumens is per 40W T12 tube. Two tubes = ~5,800 lumens total.

Heliamphora Leaf Browning

Night temps of 70°F are too warm. In nature, days ~80°F, nights drop to 50s°F. Cool nights are critical; side lighting won’t fix this. Winter may naturally provide cooler nights.

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