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they look great. carbon filter or ona gel.

to start with count on something like .25 (ok first grow) to .5 (outstanding first grow) grams per watt of flowering light. so if you were running two 1000 watt lights over 20 plants that would be 17 to 35 ounces. as you gain knowledge and skills your yield will go up.

that's kind of interesting, same thing going on with the pruning, obviously. so maybe it's more like the plant tries to repair the wound site by flooding it with nutrients and the secondary branches are the beneficiaries?

the stair step pattern simply means to start at the bottom node of the main branch, cut one fan leaf of the pair, then go up to the next node(where fan leaves are at 90 degree angle to the fan leaves in first node), cut one fan leaf, then at the third node you cut the leaf opposite the leaf cut...

no way 20 plant set up for $500. and i'd strongly advise starting with only a couple of plants so you don't get overwhelmed. you're eventually going to want separate veg and flower rooms, so an easy way to start is to go with a hps/mh combo light in the 400/600 watt range for both veg and...

only a first time parent would take that many pictures of one plant. congrats on doing well so far - your plant looks pretty good. how much light are you going to use for flower? i'm guessing you might need some more. you can add molasses to your water throughout flowering. dissolve it first...

use this http://www.consumerreports.org/cro/a...heet/index.htm to size your ac needs. look into split mini a/c instead of portable, much more efficient.

it will stop flowering and eventually return to veg

i cannot claim original ownership of this idea - it was in the old growfaq - but since i don't think anyone uses it anymore, i'm gonna jack it for myself. it won't double the yield of someone already using advanced growing techniques but it is an easy way to improve on basic growing techniques...

not all of your space is usable for adult plants because of height limitations. if you can make the dimensions work and can divide the area i would use the lower ceiling side for vegging under cfl's (don't think you have head room for mh) leaving the space that has 6 - 8 feet for flowering...

start with half the recommended amount of mg and increase as your plant learns to handle it. and sickstoner is right, you'll need a different nute for flowering.

i strongly recommend you do a test grow with bag seed in soil to get a handle on how the plant grows without the complication of hydro or the cost of expensive seeds. that will let you dial in things like light, ventilation, smell control,etc. add hydro when you've got the basics down. if...

the hand method is perfect for measuring radiant heat, but with a strong light close up you have to worry about too much light as well as heat. by bringing the light that close you are providing far more light than the sun which can hurt your plant. as long as you're not exceeding 10,000 lumens...

lots of people use hps for their whole grow - and no, using hps does not cause the leaves to turn yellow. most likely culprit is a nute deficiency, like too little nitrogen. and yes, if you've lost most of your fan leaves the plant will grow much more slowly.

to be fair it gets a little confusing because you measure radiant heat with your hand and use a thermometer shaded from direct light to get the ambient air temperature. both are important for growing.

ninety degrees is hotter than the plant likes. keep it in the high seventies if you can.

use your hand as a temperature gauge, placed at the top of the plants. lower your light as far as you can with your hand being comfortably warm but not hot. if you are using air-cooled hoods or cooltube you'll be able to get the light to within a foot.

assuming about three square feet of floor space per adult plant gives you 9,000 lumens per square foot with both lights. recommended light is 7,000 to 10,000 lumens per square foot, so you're short quite a bit of light with only one 600 watt light. yield goes up directly with wattage, within...

yes. you can buy non-toxic sprays meant for vegetables to keep deer, etc. away all that have six legs and are herbivores. seriously, just like with animal spray there are non-toxic bug sprays meant for vegetables. your plant's not likely to survive a hurricane, but if you're just talking...

as often as you choose. more topping equals more large colas. you can start anytime after the fourth node and continue as long as you want. i stop topping when the growth tip is showing pistils. no restrictions, your choice. even topping mother gives you two clone sites in place of one. it...