Are these led lights dimmable?

The cords have an on/off rocker switch built in. Generally this style of LED is not dimmable. Each is individually not that powerful. I am adjusting the intensity by adding and subtracting tubes and adjusting the height over the plants. It is working out fairly well. For an 18" x 48" shelf I am using 3 tubes. I just used these this season for seed starting and those plants were just put in the garden. They worked well.

How many lights and what distance for sowing seeds for 48"x24" flats?

We do not use them for seed flats at this time but will likely do so next spring, These are very bright, powerful lights. I would use no more than two 48 inch per flat. Not knowing your location or setup I do not think that these bulbs will generate enough heat without other supplemental heat.

How far apart in parallel should the lights be placed for growing seedlings?

The height would also need to be considered as for spacing in parallel. 12 to18 inch for approx 12 in height

I bought a six pack of 2' lights. the shelf is 16" x 36". How many 2 foot lights per shelf?

I turned my walk in closet into a nursery. I have 3 long shelves around 4’ in length and 2.5’ in depth. I use 2 lights per shelve. That’s been working for me.

Barrina 4ft T8 Grow Light 42w Full Spectrum Grow Light

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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R11763

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In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Grow smarter, not harder — light up your indoor jungle with Barrina brilliance!

DURABLE COOL RUNNING - 100% aluminum shell ensures superior heat dissipation for longer LED lifespan and reliable performance
SEAMLESS MODULAR SETUP - Link up to 6 lights with included connectors and cords for scalable indoor gardens or greenhouses
EFFORTLESS INSTALLATION - Complete mounting kit with clips, tapes, and cable ties lets you set up in minutes—no pro needed
EYE FRIENDLY FULL SPECTRUM - Pinkish white light mimics natural sunlight while reducing eye strain during long grow sessions
MAXIMIZE GROWTH EFFICIENCY - 252W total power with 1152 LEDs replaces 1400W traditional lights, boosting plant absorption by 95%+

The Barrina 4FT T8 Grow Light 6-pack delivers a powerful 252W full spectrum LED solution designed for indoor plant enthusiasts and professionals alike. Featuring 1152 high-efficiency LEDs, linkable modular design, and a durable aluminum build, it replaces bulky 1400W traditional grow lights while providing optimal light absorption and eye comfort. Easy to install with comprehensive hardware included, these lights are perfect for greenhouses, shelves, and grow tents, ensuring vibrant, healthy plants with minimal hassle.

Specifications

ASIN	B082ZKJZP1
Brand	Barrina
Brand Name	Barrina
Brightness	3100 Lumen
Bulb Base	G23
Color	Pinkish White
Colour	Pinkish White
Connectivity Protocol	Corded
Control Method	Push Button
Controller Type	Push Button
Customer Reviews	4.6 out of 5 stars 2,153 Reviews
Efficiency	Higher than HPS/MH lights
Finish Types	Powder Coated
Fixture Type	Non Removable
Included Components	Power cords with ON/OFF switch, connecting cords, small connectors, installation clips, tapes, cable ties
Indoor Outdoor Usage	Indoor
Installation Type	Flush Mount
Item Dimensions L x W x H	119.6L x 3.3W x 3.5H centimeters
Item Weight	7 Pounds
Light Color	Pinkish White
Light Fixture Form	Pendant
Light Fixture Installation Location	roofing
Light Output Maximum	3100 Lumens
Light Source	LED
Light fixture form	Pendant
Lighting Method	LED
Manufacturer	Bailina Lighting Electric Appliance Co.,Ltd
Manufacturer Part Number	QL42
Material	Aluminum Polycarbonate
Material Type	Aluminum Polycarbonate
Model Name	Barrina LED Grow Light
Model Number	QL42
Mounting Type	Ceiling Mount
Number of Items	6
Number of Light Sources	6
Other Special Features of the Product	Easy Installation, Full Spectrum, High PPFD, Linkable
Power Source	AC
Recommended Uses For Product	for indoor using
Required Assembly	Yes
Room Type	Indoor
Room type	Indoor
Set Name	Pack of 6
Shade Color	White
Shade Material	Aluminum
Shape	T8
Size	4FT
Specific Uses For Product	Indoor use only
Style	Pack of 6
Style Name	Pack of 6
Switch Type	Push Button
Theme	Indoor Use, Plant Growing
Unit Count	6 Count
Voltage	270 Volts
Water Resistance Level	Not Water Resistant
Wattage	42 watts

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R11763

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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