Re: cfl vs led vs halogen lights
Posted: Thu May 14, 2015 1:21 am
Photosynthetically available radiation (PAR) is the amount of radiant energy available within the approximate spectral range of 350 to 750 nm and can be calculated using PAR meters.vikas wrote:How to calculate all these PAR PUR values?sushant wrote:W/G is no longer used. it used to calculate an approx value of lumens emitted by a standard T8 tube (excess of modern light meters to a hobbyist was very limited). For plant you need PAR and PUR values.vikas wrote:do we have the same rule for led as 2-3 w/g? or less watts will do?asheesh wrote:all of these have pros and cons
LEDS are best right now very less heat and longer life