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something like this one - http://www.everythingfurniture.com/air-conditioner-2.html?utm_campaign=Froogle&utm_medium=Comparison&utm_source=Froogle_EF&utm_term=ROYAL-ARP-5010X#axzz0jboBG3nT - they run $500 new but i've seen them on ebay for $100.

probably the best thing for that plant would be to harvest the cola when its ready and leave the rest of the plant under 18/6 and it should return to veg in a couple of weeks. then you can start pulling clones.

i would check to make sure nothing has changed with your ventilation. blocked air outlet, failing fan - something like that.

there is no way around needing an ac in your situation. you're right, most portable ac's are very inefficient. here's consumer reports suggestion: "If you do decide to buy a portable unit, choose a model that has two hoses (one that brings in air from the outside to cool the condenser coils...

welcome to rui and growing. since its your first time growing i would suggest you grow in dirt just to check out your grow room and to get experience in how the plant changes as it grows. you can go to hydro to boost your yield on your next grow. for increasing your growing knowledge there...

1. the 250 watt mh puts out more light than a 250 watt cfl. 2. the cfl has its own built in ballast. you wire the mh as follows : bulb - socket - ballast - electrical outlet. 3. when you add the ballast and a hood the mh costs more than a cfl and a reflector. and, those are great prices...

here you go How to control the amount of CO2 in the growing area

welcome to rui and growing. i can help you get started - you want to keep cfl bulbs within two inches of the plants. you want 6500k (or similar) spectrum cfl bulbs for vegging you want 2700k (or similar) spectrum cfl bulbs for flowering, preferably 100 total watts per plant from...

i'd let them grow to 3 or 4 inches before removing them.

with the air cooled light you can drop the lights to within a foot of the plant tops (test with your hand)

you almost certainly are not keeping them moist enough. if you put a 6" tall clear plastic cup over the seedlings they will retain moisture better. when young it pays to water the sprout a little it every day. switch to the wait-until-its-dry watering scheme after a week.

bury some of the stem in new dirt

technically, you are already flowering the plant from the window light. what you are trying to do is return it to veg which you can do by changing the light cycle to 18/6. it will take awhile for the plant to recover and start vegging again. you can use a flowering light for vegging but it...

a 400 watt metal halide light would be better for vegging

welcome to rui. my signature below has links to a few of the best threads on the site.

you want to shoot for 7,000 lumens per square foot which means either two 1000 watt hps lights or three 600 watt hps lights. number of plants is determined by the strain you choose to grow, hydro or soil, how long you veg and what techniques (LST, SOG, SCOG, topping, fimming, super cropping)...

you want to add only enough water to keep the top 1" moist, not soaking

just so we're speaking the same language - a cfl that puts out 2200 lumens is only a 30 actual watt bulb. the 75 watt label refers to the equivalent light of a 75 watt incandescent bulb. by the time your plants are more mature you will need a minimum of 100 actual watts per plant. you can...

you transplant after you start to see some roots wrapping around the cup

no worries. for great general info check out the links in my signature below. the only thing i can see from your pic is that your lights are too far away from the plants. first, you should make sure you're using compact fluorescent lights (CFL)...