Welcome to the cannabis school for new growers section. In this section you can ask and get answers to questions about growing cannabis. Whether you are are new to growing cannabis or thinking about getting into the hobby, there are no silly questions so ask away. To become part of our online cannabis growing community click here to register.

HPS – High pressure sodium

A place for new grower to ask questions and learn about growing cannabis
Post Reply
User avatar
Nanook
Respected Member
Posts: 9825
Joined: Thu Jan 01, 1970 2:33 am
Location: My nest
Has thanked: 645 times
Been thanked: 950 times
Contact:
Status: Offline

HPS – High pressure sodium

Post by Nanook »

A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.

Two varieties of such lamps exist: low pressure and high pressure. Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting, such as street lamps.[1] High-pressure sodium lamps emit a broader spectrum of light than the low-pressure lamps, but they still have poorer colour rendering than other types of lamps.[2] Low-pressure sodium lamps only give monochromatic yellow light and so inhibit colour vision at night.

High pressure sodium lights are mostly used in the flowering phase of growing due to the light spectrum produced. They also produce a lot of heat.
The quieter you become, the more you are able to hear.

Post Reply

Return to “Canna School for Newbies!”