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with that much light for one plant your yield will depend on other factors. in other words, you've maxed out on the benefits of more light and nutes, air, strain, water will determine the yield. with the right conditions you could produce anywhere from 12 ounces to 1 1/2 pounds for a sativa...

i'll take a few guesses: are you reusing soil? have you re-checked temps? have you re-checked your air circulation, especially incoming air?

1. The temperature inside was around 85o F. Pretty hot I guess. So here a have my first question: Do u think I should use 2 intake 8mm fans 40CFM + 1 exhaust 12mm fan 80CFM or remain using 1 intake 8mm + 2 exhaust 8mm?? you are right to use two exhausts and one intake. but your placement of...

you have just the right amount of light for five plants in flowering. 800 watts hps is about 120,000 lumens. if you assume about 3 square feet per plant then you have 8,000 lumens per square foot. the recommended amount of light for flowering is 7,000 to 10,000 lumens per square foot.

yes, they're also called duct mufflers if you want to search other options, and they work great.

you either have the worst luck on the planet (there is a 98% chance of getting only one female out of 6 plants) or you are not sexing right.

these babies are three weeks old, 12/12, from seed under a 600 watt hps at 2 feet, although now that they're past the seedling stage i'll get them within a foot of the light from now on. they're adding one node per inch. a 600 is ok at 2 feet for seedlings but you want to have a 150 watt...

your plants are a little stretched and growing slowly from too little/too far away lighting. you should have 3 or 4 sets of leaves (nodes) by now. lighting is the most important factor in indoor growing. by the time you're ready to flower you should have at the very least 6,000 lumens per...

or you can place something under the little ones to bring them up to the same height. also, difference in height could be that your bagseed is sativa strain while your good stuff is indica. you may need to train the sativas to keep them short enough for your grow area.

you may be ok - there are two kinds of temperature you have to worry about - ambient air temperature and radiant heat. 75 f is the target air temp and is taken at the top of the plant but shaded from direct light. if you don't shade the thermometer it will read a combination of radiant and...

the little hairs you see are called pistils and are the flowers of the weed plant. they start out white and turn brown as the plant ages. generally, the plant is ready to harvest when the pistils have withdrawn into the bud. your close up in the last pic is a little blurry but it looks to me...

70 watts x 150 lumens/watt for hps is 10,500 lumens per square foot. so yea, 7,000 -10,000 lumens per square foot is the optimal amount of light without enhanced co2.

???? that plant is not vegging, its late stage flowering.

4 plants at 3 square ft per plant, 90,000 lumen hps gives you 7,500 lumens per square foot. just saying. and as for " without burning them with the heat this distance is normally around 3-4 feet" i challenge you to put a poll on this site and see how few people keep their lights that far...

genetics wins over environment. you could take it inside on 24/0 lighting for five years and the plant won't get bigger than 3 feet after flowering. if it's budding now it will likely revert to veg as the days get longer, but it's not going to get much taller than 18" until it flowers. you...

not unusual at all to be watering every day with a pot that small. you have got to be close to root bound. if you're in the right sized pot, you shouldn't have to water any more than every three days.

here's the info to make your own decision: minimum light for flowering weed: 3,000 lumens per square foot recommended light: 7,000 to 10,000 lumens per square foot (sun = 10,000 lumens/sqft) a typical 600 watt light gives off 90,000 lumens. so with 2 600 watt lights and 7,000 lumens...

not sure what problem you're having. putting on buds?? size?? your plants are not too short as carmelicious only grows to about 2 1/2 feet, with most of that growth in the fall when it receives less than 12 hours of light.

i have no idea why people think you can put a carbon filter in the middle of a run. store bought filters look like this - http://www.htgsupply.com/products.asp?categoryID=9&subcategoryID=29 - and are made to pull air through the filter. these filters have to be at the beginning : filter...

that's enough air movement if all you are doing is exchanging oxygen rich air with fresh outdoor air. if you need to bring in air to cool the room, you need alot more air. on the question of lights you're kinda asking how fast you should drive without telling us what road you're on...