Quote Originally Posted by Al B. Fuct
To run a 400HPS, you'll need to organise some proper ventilation- and opening a closet door a couple times a day doesn't count!

Fans moving air around in a closed space don't cool anything- they just distribute the warm air around- and add a bit more from their own motor.

You need to pull fresh, CO2 laden air in from outside the op airmass and dump waste heat and humidity transpired from plants to someplace where it can not be easily pulled right back in the grow. An ability to properly ventilate a space will dictate whether you can grow in it or not. If you can't vent it, you either won't get any buds or very few, poor quality ones.

CFLs are OK for clones, seedlings and slow vegging some mums, but they're a real compromise in flowering. Cannabis needs the high intensity light from HPS to make dense, heavy buds. However, if you can't move enough air to cool the HPS though can get enough in for the plants and a bit more, flowering with CFLs may make the difference between growing a little or none at all.

Tall plants are not the friend of the indoor grower. Even powerful HPS lighting has only so much foliar penetration ability. I use 1000W HPS in my SoG op; they make good buds about 33-36" deep, so I grow the plants to suit the light. A 6 foot tall plant would produce very little beyond the 3-4 foot range of a 1000 HPS. The answer is easy- grow 'short' plants indoors, no taller than the foliar penetration depth capability of your lights.

If you plan well and use a space that can be ventilated, you'll get top notch buds at very little cost- and never have to buy on the black market again. If you fail to plan, plan to fail.
every space i think need s air coming in and out that s obivous , u r right tall plant s arn t ideal 4 indoor , but with the way the laws r i grow 2 big plants rather than 4 little 1s and thank god i never hav 2 buy buds a gain, that s on a 12 week cycle , aus bod look n sweet as m8
...gas... Reviewed by ...gas... on . First Indoor Grow Have been checking out this site for a while for info on my grow. It actually just started with me droping bag seed into some soil to see what would happen and the seed just took off so I'm tring to do my best with it. Will post some more pics soon. Here as some from week 2. :thumbsup: Rating: 5