well i think it`s common knowledge that MH is for veg and HPS is for flowering!! :rasta:
But just to confuse the issue!!!! ..........
There are quite a few different HPS bulbs on the market and some can be used throughout the entire grow - both veg and flower!!
I personally have a sylvania growlux 400W bulb which by all accounts delivers the entire spectrum of light so is good for both veg and flower.
It does deliver far more of the red end of the spectrum than the blue so u`d be far better off using a MH for veg and then switching over to say a ` son t` hps bulb for flower but it does show that ... depending on the bulb ur using ....... u can use just HPS for the entire grow
Did that just confuse everyone or help???
I dunno
Digi
digitaldog Reviewed by digitaldog on . why does red spectrum ligh.. Why does my plant go limp under red spectrum light? i'm growing lowryder under a 250 watt hm , but when i add warm whit cfls (red spectrum) they get droopy. when i swithch back to mh it's all good. why is this? Rating: 5