For tiny plants in a small setup like a space bucket you want 20-30W CFLs. If you plan to grow your plant up to a foot tall, you may want to use 40W CFLs and bigger since the smaller ones won't have enough penetration to reach the bottom of your plant.

Thereof, how close should CFLs be to seedlings?

You can keep them as close as you want as long as they don't touch. I keep mine 1 inch away, but their normal growth means I need to move the lights daily. Closer CFL's will mean a shorter, bushier plant. Farther away they will grow taller as they grow towards the light.

Additionally, can I use regular CFL bulbs to grow plants? CFL bulbs provide the light wavelengths that plant need for growth and produce much less heat than conventional fluorescent or incandescent bulbs. Compared to sunlight, CFL bulbs produce far less light intensity, so multiple bulbs may be needed to provide enough light for healthy plant growth.

Likewise, people ask, how many CFLs do I need for 2 plants?

So the answer is that for 2-3 plants, and each plant contains 1 square foot, you should need not less than 150 wattages. In terms of lumens, it's always great if you can have as much as possible as long as your space can handle the heats, up to around 10000 Lux. That is the case of CFLs.

Which CFL bulbs are best for growing?

The Best CFL Grow Light for You

  • Apollo Horticulture 60 Watt CFL Compact Fluorescent Grow Light Bulb for Plant Growing – 6500K.
  • Hydroponic Full Spectrum CFL Grow Light Bulb 60 Watt Bulb 5500K H60.
  • Philips 433557 100-Watt Equivalent, Bright White (6500K) 23 Watt Spiral CFL Light Bulb, 4-Pack.

Related Question Answers

How far should LED be from seedlings?

The G8LED 240 Watt LED Grow Light is for 2-4 mature plants, with a distance of 12-24 inches from the top of the canopy. The larger G8LED 450 Watt LED Grow Light is for 4-8 mature plants, with a distance of 14-30 inches from the plant canopy. These lights also work well for mother plants and cloning.

How much light does a seedling need?

Your grow lights need to be kept on for about 14-16 hours a day. Don't leave them on 24 hours a day though. Like us, seedlings need to rest for a few hours each day. So plan to give your seedlings 14-16 hours of light during the day, and then leave the light turned off overnight.

How far should a 600 watt HPS light be from plants?

The average 600w bulb with sufficient cooling needs to be more than 13″ away from the plants at all times. The plants should be spaced at about 17″ for maximum light usage, adequate vertical growth room and to keep the plants small.

How far should 300w LED be from plants?

LED Grow Lights
Type of LED Grow LightDistance From Plant
1W Bulbsat least 12″ (30cm)
3W or 5W Bulbsat least 18″ (45cm)
High Wattage (300W+)up to 30″ (75cm) or more

How far should 600w light be from plants?

When you first introduce plants to your grow space, if using a 600W light, you need to keep them at least 3 – 4 feet away from your plants to begin with, just while your plants climatise to the heat.

How big of a grow light do I need?

The Size Of Your Grow Space

When growing cannabis, a good rule of thumb is to use a minimum of 50 watts of light per square foot of grow space. We want to flood our plants with light ( food ) so that they have lots of energy to produce big potent buds.

How far should HPS lights be from plants?

HPS lights should not be placed inches from the plants, as you would place fluorescent lights; you should set HPS lamps higher, generally between 5 and 8 feet from the plants. Whether you have a reflector with your HPS light makes a difference for how close you can keep it from the plants.

How far should t5 lights be from plants?

Although T5 lights are famous for emitting very little heat, this doesn't mean you can put the bulbs an inch above plant canopies, as this distance will still damage the plants. The best height for a T5 grow light is about 6-8 in. above the plants, but you should increase that gap to 12 in.

How many watts do I need for seedlings?

Using a 60-watt bulb means you can put the seedlings within 3 to 4 inches of the bulb without harming the new leaves and stems. When you use a stronger bulb, such as 125 watts, it's best to keep the seedlings at least 6 inches away. This distance is too far for ideal seedling growth.

Is 6500k good for plants?

Foliage growth is generally best around 6500K, though many plants need a period of warmer light, around 3000K, in order to produce flowers, and thus fruit. In other words, if your goal is to simply produce seedlings, leafy green vegetables, or root crops, you only need higher spectrum bulbs.

How many CFLs does a plant need?

Just aim for about 150W of CFLs in Total Per Plant to Start, and stick to relatively smaller size bulbs if you can! If you want them to screw into regular light bulb sockets, use ones with a “medium base”.

What Kelvin is best for flowering?

These “high kelvin” bulbs are optimal for vegetative growth. These CFL bulbs mimic the color temperature of the sun during Spring/Summer. Bulbs with a more yellow/red tint are listed as “Soft white” colored with a Kelvin of 2700K. These “low kelvin” bulbs are optimal for the flowering stage.

Is 2700k good for growing?

The Sun Blaster 26W (2700K) is the best soft white CFL bulb right now. It's a bit pricey, but quite efficient and does a great job during the flowering phase for most plants. Keep in mind that you'll need to buy at least 4-5 of these to get enough light intensity to actually produce flowers and fruits on your plants.

Which one is better CFL or LED?

LED bulbs require much less wattage than CFL or Incandescent light bulbs, which is why LEDs are more energy-efficient and longer lasting than their competitors. The lower the wattage needed, the better.

Can you use LED and CFL together?

As far as I know, using LED and CFL together is recommended, as long as you keep the temperatures in check so your plants won't get burned. The more light, the better because no kind of lights is perfect.

How many lights do I need per square foot?

For the average space of 250 square feet, you'll need roughly 5,000 lumens as your primary light source (20 lumens x 250 square feet). In your dining room, you'll want about 30 lumens per square foot on your dining table (to see, not examine, food), so if your table is 6 x 3 feet, that's 540 lumens.

Is led better than CFL for growing?

They are however much more powerful than CFL lighting setups. Further, high-quality LED grow lights are more expensive to buy than their comparable HID equivalents. LED Lighting Pros: More powerful and effective than CFLs. Much less heat output than HIDs.

Is 5000k good for plants?

5000k-5500k have the most PAR light than any other flouro all you need is that bulb. 5000k is also really ideal for seedlings and clones. personally if i was doing CFL i would do a mix of 5000k and 6500k for veg and 5000k only for flower.

Will 5000k LED grow plants?

Go higher than 5000K, and so much red light is left out from the spectrum your plants will grow slowly and without much vigor. But at the end of the day, plants will “veg” and “flower” under any kind of light.