Are high pressure sodium lights being phased out?

Phasing out
A number of popular lighting types will have to be phased out by 2017 including selected ‘standard’ high-pressure sodium (including retrofit), high-pressure mercury, and standard performance metal halide.

Are LED streetlights better than sodium?





Sodium vapor bulbs contain metals that are evaporated into inert gas within the glass casing while LEDs are a solid state technology. Both technologies are very efficient. The difference is that sodium vapor lights were the most efficient technology of the 1970s while LEDs are the modern day equivalent.

Can you put a LED bulb in a high pressure sodium fixture?

Good news: yes, you can! There are a number of LED solutions on the market today to make upgrading to LED simple, whether it’s office lighting or high-power parking lot lights you’re looking to make more efficient and get a longer operating life out of.

How efficient are high pressure sodium lights?

LEDs are typically 40,000 – 60,000 Hours. Like Metal Halides, High Pressure Sodium lights are omnidirectional, which wastes light and makes them less efficient. They lose roughly 15% of their heat emissions which adds to their inefficiency.

Why is HPS better than LED?

The heat per watt is far greater with an HPS fixture compared to LED. This technology is far more efficient in transferring energy in to light, as it produces less heat and has a higher wattage equivalency to HPS (600w vs 1000w).

What is better for growing LED or HPS?





LED Grow lights are preferred because they consume less electricity than HPS lights. According to market research, LED lights consume 90 percent less power than HPS grow lights. You have less load on your amperage and electric breakers at home because LED grow lights enhance the energy efficiency of your indoor garden.

Is HPS full spectrum?

Metal halide conversion bulbs that operate on HPS ballasts or digital ballasts have the same type of full-spectrum output as standard MH bulbs and usually have the added benefit of a higher lumen rating.

What lights do professional growers use?

Today, the most widely used lights for professional use are HIDs and fluorescents. Indoor flower and vegetable growers typically use high-pressure sodium (HPS/SON) and metal halide (MH) HID lights, but fluorescents and LEDs are replacing metal halides due to their efficiency and economy.

How much does a 600 watt HPS yield?

A 600w HPS light can produce up to 150 to 300 grams in optimal growing environments, which is 0.5 grams per watt or less.

Does more light equal more yield?



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.

Why is HPS better for flowering?

HPS lamps emit a lot of light in the red spectrum, which improves the flowering stage, and more than average light in the blue spectrum, which is beneficial during the growth cycle of the plants.

How many plants can you have under 600W?

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.

What area does a 600 watt HPS cover?



around 36 square feet

600-Watt HPS grow lights are the most efficient HPS grow lamp. 600W HPS grow lights produce more light output per Watt used than other wattages and cover around 36 square feet. 1000-Watt HPS grow lights are the most powerful and cover a wider area of around 49 square feet.

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.