2 month outdorr,but want to put it in my tent under a hps 600,

will it be ok or i need a mh or retro light ?????? what would happen if put it under the hps

it will still grow under the hps, it only switches to flowering when you switch the lights to 12/12. i veg and flower under a 400w hps

so why the fuck do you need a blue lite from a mh light if u realy dont need to use it ,wouldnt every1 just use hps then

it grows better under a metal hallide, but the hps works as well. the hps produces more lumens per watt. so if you can only afford one HID light, it is suggested that you go with an hps.