Cannabis Grow Rooms

I'm curious on lighting, alot of people seem to use 18/6 veg 12/12 for flower, I was wondering if there are any advanteges to using say 24/0 for veg and 18/6 for flower. This provides a shorter lights on period than in veg but is it enough to trigger flower of do you need more than 6 hours dark? I was thinking that if you could do that no probs, would the buds grow bigger than on 12/12 as they have 6 hours more light each day or have I got something totally wrong here? Slightly off topic but I read a paper written buy some canadian guy about marijuana potency and in it it states that high UV radiation exposure causes plants to increse trichome production inturn increasin…

Ok guys and girls. I'm just about ready to kick off the next grow, just waiting for the real estate to do their inspection thing, and for some seeds to arrive. I was checking out what ballasts I have just before, and I came up against an old question I've had on my mind for a while but never resolved, and I hope someone here can put me right. I'm going to run one of my 1kwatt lights. But I have two different ballasts, and I wonder which one is better, as in does one draw more power than the other, one more relibale than the other, produce more light than the other..anything measurable between the two which would make one better than the other? Des one run hotter than …

Ok, well I have just finished watching a vid over at YouTube. It was all about UVB and THC and the relationship between the two. Oh, before I forget, here's the link for the vid if anyone is interested. Caution tho, it goes for about 17 minutes. And it got my to thinking how I might try it out on my grow. Apparently UVB is somehow responsible for the production of THC... I have an incandescent UV globe and now I'm planning on adding it to my lighting array when it's time for my babies to flower. Has anyone tried this? Ideas? Feedback? ~Rose.

i have had 3 plants under a 400 w hps light for about 5 days the plants are about 7 weeks old and there on 12/12 for the last 5 days as well. I cant tell what sex there are yet dose any one now how long that usualy takes after 12/12 to identify? well my main problem is my leaves on my plants are starting to curle up towards the light they look very healthy but its like the leafe just wants to roll up i have my hps 32 cm away from the top of my bigest plant so i dont think it is burnt at all if any one has any advice for me that would be excellent, another question i have is am i flushing my plants right i have them in about 3 gallon pots and flush them with about a gallon…

hi everyone hope you well. now i am in the last step to get the materials to finish my first indoor cab. thanks a lot to everbody that reply my first stupids questions about indoor grow, is really confortable and usefull for me to read post in this forum....i already decided to get seads from nirvana (white widow), due to space i just could make a cab with the next dimensions: 180cm Height X 58cm Wide x 33 cm deep with door, the interior is with reflectant paper i know that is no too big, but i think that i can do something with this. I am thinking in divide by 2 the heigth room so ill be with 2 stations (veg and floration). according with the Lighting & V…

welli bought a new globe today. i couldnt help my self when i seen 600W HPS globes for $27 on ebay . so just wondering if anyone has used these before and how you went. gnome.

So im using a brand new set up. 600w digital ballast, along with pulse start metal halides (sun system) from life light tech. These are supposed to be awesome bulbs. But...im having what i think is a problem, you tell me. There is some sort of "flickering" going on. Its very subtle, but you can tell that the bulbs have some flickering and almost color change from red/blue. With the naked eye, its so bright in there that you cant really tell, but with shades on you can really look at the walls and tell there is a flicker. Now should i be worried about this, or has anyone had this and will it stop? The company said that it could be a cheap ballast, but the ballast is bran…

should u be sucking or blowing the air thru?

I'm building a grow room in a closet with the dimensions of ( H=4FT W=3FT L=2FT). I'm getting a 400w HPS. What I want to know is how much plants could I fit in this area? and how should I go about ventilation. the area I live in never goes below 70degrees summer time . I live in a high place so the air is always circulating through the main room (knocking over pics etc..). The closet have two swivel doors in front and I have the sightest idea how to vent it, any help will be appreciated....One more thing do I need to vent the area for the veg compartment(I was thinking on using a large rubbermaid green container) ? Thanks for the help