how long do lights last

iv a 400 hps light can any1 tell me how long thay last ,,how meny grows ??


cheers


anto

You should be able to get at least 2 full grows out of any HID bulb. Hopefully more

never heard of hid ???

High intensity discharge = Mercury Vapor, Metal Halide, High Pressure Sodium etc...

Bulbs can have a theoretical lifespan of 5 years+, but the amount of lumens it puts out will gradually decrease over this time. Best to change it once a year to keep your growroom at peak efficiency.

will keep my eye out for them ,,a they better than hps

cheers

anto

My last 150 HPS bulb went bad within like 2 months...The light would look white..Lost its golden glow. It could've been a defective bulb

In a word, No. HPS are the most efficient lights, followed by MH, then MV.
HPS are more suited to flowering, as they put out the red end of the spectrum that plants use during this stage of their life. MH and MV give off more of the blue light that plants need during their vegetative stage.