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Here's my first grow. Started in a 1x1x2 under a single 23w CFL and eventually was bumped up to 388w in a 2x3x4. First round yielded 5.6oz from 6 plants.

4 tons? Tip leads authorities to 4 tons floating off the shore of LA. Gotta assume the anonymous tipper might have just kept a bundle or two ;) http://www.youtube.com/watch?v=HMEGctXQtlA

Some great data here - http://www.greners.com/reflector-test.html

Ah, the Cu Al debate. Are you sure copper is better? Regardless, your heatsync should be large enough to not bend or balloon under heat. Copper vs Aluminum: OK, specific heat (Cp) is the measure of how much energy it takes to raise the temperature of 1kg of material 1degree (C or K)...

Looking very nice.

Just use thick material. Here's a 100w array going onto a 6x6" aluminum block http://www.youtube.com/watch?v=h75OMl02Sak&feature=related

220-440+ CFM inline and a matching carbon filter. 220cfm would be bare minimum. **220 is bare minimum if venting an aircooled hood. You'll need much larger fans to vent the tent if not using cooled hoods.

I would vent it but no it's not too hot for that size. Many people run 1kW lights in 4'x4'x6.5' tents (vented lights) which is considerably smaller than 2x2.4x2m

More ISO with the more weed you use. Once the alcohol evaporates it's as potent as it'll be - you can't make it more or less potent except through a slow sloppy extraction which is what you would get using just a tiny amount. Summed up - More ISO = more product, cleaner product, and more...

Slyme and aurora honeycomb? What? huh? ;)

They have 100w and 200w arrays that can just be mounted to a large heatsync. You think the single 7watters will get hotter?

^ I love that ordering style. Surprises are great and with RK you wont be disappointed

You're using it with your bong? If so you just need a female to female adapter (called a male to male adapter) which you can probably find at your local head shop. If not this member can help you out - https://www.rollitup.org/galleries/320294-trying-my-hand-glass-pipe.html

Personally I think you have it down - 3 or 5w CREE diodes mostly w/w with a few blue and a few red if you feel like it. Ideally spaced out over a large area on a large heatsync. Unfortunately that'll cost you a shitload more than the cheap options. A few days ago I priced together a 300w CREE...

Cheap bulbs are really cheap. Here's a philips which is actually a brand name and of fairly decent quality $12 and they are even cheaper at your local home depot -...

Could have been a salinity lockout in which case the flush will help quite a bit. Out of curiosity, what causes this plant to have poorer drainage than the other two? Yellowing/purpling late in flower can be very natural. Yellowing = low chlorophyll A and B due to low nitrogen soil levels...

I'd switch from bonemeal tea to a more soluble source of P like bat guano. Bone meal takes forever to become available and really needs to in the medium right up against the roots. I would suggest hitting it with a broad range micro like CalMag Plus. ** and I wouldn't worry about pH lockout...

You can run a 600w bulb in a 400w ballast and it will fire and put out 400w of light but the spectrum will be compromised. I would recommend you purchasing a cheap $10 400w bulb to use with your 400w ballast until your new light comes in.

I'm confused with zacades 30% yield. If the bud going in isn't 30% cannabinoids - and I doubt it is, then wouldn't a 30% yield mean the oil is fairly dirty?

Bigotry, "just get over it". - Dank. I swear in your thread you ragged on ALL Chinese glass - another blanket statement. Something about how all of it is infused with dangerous levels of lead. Of course I could be wrong, might have been someone else, can't tell because you deleted all of...