[QUOTE=pinkchick]
- 2 holes with thingies to keep light out at bottom
[QUOTE]



What exactly are thingies? I'm curious to know. I think by soft plastic you mean the white 'total blackout' plastic sheeting?

You asked about 24/0 instead of 18/6, a full twenty four hours of light would benefit the plants alot, regardless of what people say, the more light the plant has the faster it grows. I had a site with all the old OG archives that explained the scientifc logic behind it, I lost it.


I assume that's an RVK fan, so yeah it will sound like a hurricane, you can forget a night photoperiod. Your setup in the diagram is the most efficient, placing the fan outside is not effective, ideally lying the muffler flat eliminates the bend in the airflow but that won't make much difference. If you hang the fan from chains or rope attached too, say, cuphooks, you will automatically eliminate some of the vibration noise but you won't ever be able too silence that fan so its less than noticable.



I also bought a 400W Hps and I also have very similar dimension to you and so far i've found the heat too outway its benefits. I'm considering getting some Environlites, you can find multi bulb reflectors in vegetative and flowerring so I will probaly move onto them and scrap the HPS completely, but that's not what you wana hear seeing as you already bought the HPS. Just something to think about. When it comes to scrog you really want too start 12/12 very early and train the stretch into the screen, its not any more time consuming than any other training method...., if you know what your doing.