Stinkyattic said: "You have to buy a conversion bulb. Don't put a MH bulb in a HPS fixture, and vis versa."
thats not true, you can put a Metal Halide Bulb in a HPS Ballast if it is the same wattage. but you cant use HPS in MH ballast. :thumbsup:
BONG0 Reviewed by BONG0 on . help with getting my project going this is my first attempt to grow so i have some questions about everything my set us is in a 3 by 3 by 9 closet, i'm growing nirvana ak 48, i plan on painting the walls white or should i use mylar LIGHT? i'm buying everything off of insidesun.com. 1. what type of light should i use after they sprout and for veg? 2. should i use 250 watt mh or 400 watt for my space? 3. when the veg is over and i want to flower should i use a 250 hps or 400 hps 4. do i need to buy another light or Rating: 5