Grow lights with reflectors (HPS, CMH etc) and boxed LED grow lights spread light wide. So, even when the grow light is hung low over the canopy, some light is going to go over the plants and hit the side wall of the grow tent. The optimum hanging height for a 600W HPS system is only
40cm or 16′′
.
How many plants can I grow with a 600W LED light?
2 month plants should give about 40g per plant, so with about 9 you’ll be able to easily fill a square meter and get up to 400g per 600w light. 3 month autoflowering plants grow much bigger, however, so you should only plant
4 per 600w light
.
How far should a 600 watt LED light be from seedlings?
For seedlings, LED grow lights should generally be mounted
between 24-36 inches above the plant canopy
– however, this depends on the power (wattage) of the light source.
How much heat does a 600 watt LED grow light produce?
When factoring in the heat given off by a luminaire, the BTUs are calculated off of the total wattage of the luminaire. If you have a 600 Watt HPS lamp, the BTUs for that luminaire are the same as a 600 Watt LED. A single watt of power is equal to 3.41 BTUs so a 600W luminaire will produce
2,046 BTUs
.
How high should my 600W light be?
The optimum hanging height for a 600W HPS system is only
40cm or 16′′
. Even at this low height a lot of light will shine on the side walls and have to be reflected down onto the grow. The reflective materials will not reflect all of the light and there will be some light lost (heating the walls).
How much area does a 600 watt grow light cover?
The wattage of the light will determine how much area you can light up. If we assume that the plants will get no sunlight, a 1000 watt light will cover about 7×7 feet of growing area. A 600 watt will cover
6×6 feet
, a 400 will cover 4×4 feet, a 250 will cover 3×3 feet and a 150 will cover 2×2 feet.
How much can a 600W LED yield?
A typical 600W HPS system yield is 640 watts x 0.4grams =
240 grams per grow cycle
. With a highly efficient LED system you can double the yield per watt.
Can you have too much LED light in a grow tent?
Cannabis plants will show a number of key signs when they’re getting too much light
. The most obvious indicator is leaf burning. This typically causes yellow leaves at the top of the plant directly under the grow lights. While the inside veins stay green, the leaves take on a yellow, burnt look.
What size LED grow light do I need?
Standard advice says you should aim for
32-50 watts per square foot of grow space
. More like 25 watts if your grow space is a dedicated veg tent. So if you were working with a 3′ x 3′ space, you’d theoretically want an LED light with a power draw somewhere between 225 watts (vegetative) and 450 watts (flowering).
How high should LED grow lights be above seedlings?
Hanging Lights Too High
VOLT Grow® LED grow lights are designed to be mounted
between 6-12 inches
from the canopy for maximum yields. This close proximity is possible because they produce substantially less heat than their HPS counterparts.
How long should LED grow lights be on?
To be effective, grow lights really need to be on for
at least 8-10 hours a day
. This can vary up to 16 hours, depending on the conditions. That’s why LED grow lights are so popular – when they have to be left on all day, it’s best to use an energy efficient type!
How many watts LED 4 plants?
| # of Plants Square Feet Wattage from Wall | 1 4 120 to 140 watts | 2 8 240 to 300 watts | 4 16 500 to 650 watts | 6 24 700 to 860 watts |
|---|
Do LED grow lights overheat?
LEDs’ electroluminescence technology is entirely different and does not require heat to produce light;
LEDs themselves will not get hot enough to start a fire
. Much of the energy used by HID lights is emitted as infrared light (above 800 nanometers).
How hot do LED grow lights get?
HPS/MH operate at extremely high temperatures –
3000
0
C/5400
0
F
. Much of that heat gets turned into infrared radiation. Infrared is a type of radiation that causes molecules to vibrate and heat up when it hits them. This infrared gets directed down on your plants just like the visible light radiation does.
Do LED lights make good grow lights?
Offering low energy usage, low heat, and color optimized for growth,
LED lights are the most efficient, effective, and customer-friendly way to grow plants at home than growing with fluorescent lights or incandescent lights
.
How much does a 600W HPS yield?
Sixteen plants that are grown under a 600-watt HPS lamp could produce about
37.5 grams or 1.3 oz of marijuana per plant
. Under perfect, outdoor conditions, you can expect yields to extend to 500 grams or 17.5 oz per plant.
How far away should a 600W HPS be?
But as a rule of thumb, you want to hang your 600W HPS grow light systems at a height where you leave a safe enough gap between your lights and canopy. For a 600W HPS Grow Light Kit, the gap should be:
150cm (small plants) 120cm (medium plants)
How do you tell if grow light is too close?
What lights do professional growers use?
HPS lights and T5 lights
are used by the majority of growers (68% and 67%, respectively) during at least one growth stage, and LEDs are used by more than a quarter of cultivators.
How many watts of light do I need per square foot?
An average LED lighting system draws about
32 watts
to serve 1 square foot of grow space. The wattage in a grow room could be amplified up to a maximum of 50 watts per square foot. Going beyond that amount would create a too strong indoor plant light intensity, which could stunt the growth of your plants.
How many lumens does a 600W LED produce?
600 Watt High Intensity LED Light –
78,000 Lumens
– 120-277V AC – High Mast Lighting – Outdoor Rated.
What’s better LED or CMH?
LED bulbs last 50,000 hours compared to 20,000 for CMH
. If you are planning for obsolescence and want the greatest yield ROI within 1-2-year time frame, choose CMH. And even if you keep your grow space past 5 years, don’t worry, CMH’s provide a greater gram per watt due to their higher PPF and canopy penetration.
Does more light equal more yield?
Light Intensity and Yields
The light intensity rule of thumb is that
a 1% increase in light equals to a 1% percent increase in yield
. In a study by Wageninen University, they discovered this to be true of all horticultural crops they evaluated including, fruiting (vine) crops and flowers.
Should I dim my LED grow lights?
When it comes to whether or not you should dim your grow lights,
the answer should be “no.”
Your grow lights are not like your typical household lights. Your plants depend on indoor grow lamps to be operating at 100 percent in order to get the full benefit of your bulb’s light spectrum.
How do LEDs grow Autoflowers?
AUTOFLOWERS AND LED
You can just
leave your autoflowers at 18–24 hours of light per day up until harvest
. Then again, if your LED light has a flowering switch, you should still use it once your autoflowering cannabis is in bloom. This will help increase yield.
