Says full spectrum but then does 400-740nm mean no UV light?

This should be the full spectrum of visible light (without UV light). I have not tested it to know how well it meets this criteria, but the 400-740nm is about right. UV is less than 400nm.

Could i use this grow light bulb in my bedside table lamp? I have a sansevieria snake plant very close to this lamp that might benefit from a growligh

I used these in my dining room light fixture. They are the size of a regular light bulb. As far as wattage and safety, I don't know.

How much would it cost to burn 3 of these bulbs for eight hours a day?

0.216 x (your kilowatt/hour rate) check your bill to see what you pay. probably around 3-4 cents for eight hours

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2 Pack 400 Watt Vegetable Metal Halide MH Glow Bulb Lamp - Enhanced Blue and Purple Spectrum CCT4200K36000 Lumens

2 Pack 400 Watt Vegetable Metal Halide MH Glow Bulb Lamp - Enhanced Blue and Purple Spectrum CCT4200K36000 Lumens

Product ID: 726486979

Details

Brand
Wiyifada
Bulb Base
E26
Light Type
Halogen
Special Feature
Dimmable
Wattage
9 W

🌈36000 lumens brightness

💡400W power for intense growth

🔵Enhanced blue & purple spectrum

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€ 53.52

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Light up your green space with power and precision!

TRUSTED QUALITY - High CRI 90 ensures natural color rendering for precise plant care
DIMMABLE CONTROL - Adjust brightness to perfectly match your plant’s growth stage
SPECTRUM MASTERY - Optimized blue and purple hues boost photosynthesis and vibrant growth
BRILLIANT BRIGHTNESS - 36000 lumens flood your indoor garden with life-enhancing light
POWER PACKED PERFORMANCE - 400 watts deliver robust light intensity for thriving plants

This 2-pack of 400W Metal Halide MH Glow Bulb Lamps by Wiyifada features a high-intensity 36000 lumen output with an enhanced blue and purple spectrum at 4200K color temperature. Designed for indoor use, these dimmable bulbs with E26 bases provide superior light quality (CRI 90) to optimize plant growth and health.

Specifications

ASIN	B085ZVM2R7
Additional Features	Dimmable
Brand Name	Wiyifada
Bulb Base	E26
Bulb Diameter	2.36 インチ
Color	Full Spectrum
Color Rendering Index	90
Color Temperature	3000 Kelvin
Customer Reviews	4.6 4.6 out of 5 stars (5,655)
Incandescent Equivalent Wattage	100.01 Watts
Indoor Outdoor Usage	Indoor
Is Electric	Yes
Light Color	Blue, Purple
Light Source Wattage	9 Watts
Light Type	Halogen
Manufacturer	Wiyifada
Manufacturer Part Number	194
Material Type	Plastic
Model Number	194
Package Quantity	1
Power Consumption	9 Watts
Shape	Arbitrary(A)
UPC	763032083877
Unit Count	2.0 Count
Voltage	120 Volts
Wattage	9 W

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