How Much Area Does A 315W CMH Cover?

315W / 630W CMH Footprint Coverage

The 315W CMH lamp ranges in coverage 3ft x 3ft – 4ft x 4ft . The 630W CMH lamp coverage ranges from 5ft x 5ft – 6ft x 6ft.

How many LED grow lights do I need?

How far apart should grow lights be from each other?

Spacing your lights 4′ apart will usually be a good benchmark to shoot for, but variances in wattage, size, and footprint will dictate what works best for you.

How many plants can you grow in 10×10?

The 10′ x 10′ Indoor Grow Rooms will house up to 32 medium plants or about 24 or so if you want them to get bigger than normal. These monstrous grow tents will require an extra room or space in the garage to be set-up in since they are so big.

How many grow lights for a 10×20 room?

There are also grow rooms that will need even more lights. For example, an 8′ x 8′ grow room would likely need 4 grow lights, and a 10′ x 20′ room could need up to 8 lights .

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.

What’s better CMH or HPS?

High Lumen Output — A 1000w HPS bulb gives you 130,000 lumens in a single light! Meanwhile, the highest amount of lumens CMH lights can offer you is 72,000 to 75,000 — and that’s with 2 bulbs. That means a single HPS bulb is 3 times more powerful than a CMH bulb .

How long do CMH bulbs last?

A CMH bulb has a lifespan of up to 24,000 hours, or nearly 3 years . While the longevity of a grow light depends on the grower’s use, CMH bulbs or lamps are typically known to have long lifespans. This will allow you to grow using the same bulb for quite a long time.

What size LED light do I need for my grow tent?

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).

Can you have too much 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.

How many watt LED grow light do I need?

As a rule of thumb, aim for 20 to 40 watts per square foot . Divide the wattage of your bulb by 20 (such as 400 watts divided by 20 = 20), and then divide the wattage of your bulb by 40 (400 divided by 40 = 10). The answer gives you the extremes of your light intensity range.

Are my grow lights too close?

The first signs look like thin outlines on the outside of the leaves, so if you catch this quickly you will have a chance to avoid further damage. If some of the leaves start curling up, it might also be a sign that the plant is too close to the light . Good ventilation usually also helps with this issue.

How many watts LED 4 plants?

How far should LED grow lights be from plants?

In the vegetative stage, LED grow lights should be between 12-24 inches away from the top of the canopy . During this stage, more light is needed for photosynthesis, so the light source should be located closer to the plants. As the plants progress through the flowering stage, their demand for intense light decreases.

How many plants can one light grow?

That way you can optimize your footprint to cover all of your plants optimally. Put these three factors together, and you’ll be able to determine how many plants can thrive under a single grow light: Figure out the size footprint you’ll need for your plants (remember: no more than 8 plants/light ).

How much can you plant in a 10×10 garden?

In a 10-by-10 vegetable garden that contains four 4-by-4 beds, each bed has 16 sections that are each 1 by 1 foot . Growing vegetables in 1-foot squares allows you to grow a wide range of varieties. For example, one square could contain nine garlic, 16 carrot, four lettuce, one tomato or six pole bean plants.

What size exhaust fan for 10×10 grow room?

For a 10′ x 10′ space, assuming you have 8 foot ceilings, you’re cubic footage adds up to 800 cf. This means you’ll need an exhaust fan with a cfm rating of around 160 in order to remove the air every 5 minutes.

How much area does a grow light cover?

A 1000 watt grow light can light up an area of about 7 feet square when the light is suspended 2 feet above the plants. A 400 watt light would work for an area of about 4 feet square.

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 grow lights per shelf?

What is this? Once you’ve set the shelving, hang the LED shop lights from “S” hooks below each shelf. With this setup, you should have a total of 4 shop lights, one for each shelf . Though you’ve fixed the shelf heights, you can drop the lights lower and closer to the plants if needed by adding more S hooks.

Can you flower with CMH?

Weaker in Flowering Than HPS

If you compare CMH to HPS on a watt by watt basis, CMH lights do have a more balanced PAR spectrum than HPS lights. And research is still being done to figure out if the added benefit of a better spectrum improves the overall crop even with the diminished harvest.

Can you dim a CMH?

These days, there are many brands and models of HID (HPS and CDM / CMH) grow lights that have the facility to be dimmed . It tends to be only the cheap ones (with magnetic ballasts) that do not. Nearly all digital ballasts have a control for dimming, and many also have a “boost” function too.

What is CMH grow light?

Ceramic Metal Halide (CMH) Lights

CMH and CDM lamps are a relatively new source of High Intensity Displacement (HID) light . They are a more efficient variation of the Metal Halide lamp. CMH lamps use 20 percent of the power required by incandescent light bulbs with the same output—80 to 117 lumens per watt.

Can you touch a CMH bulb?

You cannot touch these bulbs . They even come with a cotton glove. These bulbs, though not used now, used to be one of the many options of aquarium lights. I always thought that if it was a double-ended bulb you could not touch it with your hands because of the oils, etc.

Does CMH have UV?

A CMH lamp designed for horticulture because we don’t block the UV . The EYE HORTILUX CMH 315 grow lamp was designed specifically for horticulture. Most ceramic metal halide lamps were designed for use in the retail space, so the UV light was blocked.

Do you need a ballast for CMH?

A CMH ballast is responsible for starting and regulating the current in your CMH grow light . Without regulation, the CMH bulb would burn too bright and “pop”, or not start at all. The ballast helps ensure the bulb reaches its standard life span, which in this case can be up to 24,000 hours.