OP,
Nice, but I think you should take more advantage of training. Check out these articles. Pay attention to LST because I feel that's your best bet in your setup. Even though a micro grow is obviously never going to yield the same amounts that a very large operation would that doesn't mean you can maximize your potential use of the box you do have. The buds look nice though even though they are small. CFL is great.
An Overview of Cannabis Training:
http://www.growery.org/forums/showflat.php/Number/239247
LST 4-Way Tutorial:
http://www.thcfarmer.com/forums/f6/lbhs-4-way-lst-tutorial-topping-sub-tutorial-24825/
I have a pc server box, measures 15x7.5 and about 23inches tall. covered with mylar, taped with chrome duck tape. two 120mm intake fans, and two 80mm exhaust fans. the 2 intake fans are on the side. one exhaust fan on top back, and other one on bottom front. I have three 26watt 1750lumens each cfl bulb, but the temperature is in the higher 80's, what do I need to do? any help is appreciated. thanks.
You have
two 120mm intake fans and
two 80mm exhaust fans. That alone tells us what the main problem is. You are forcing more air into your case then you can expel.
An exhaust fan on the bottom front doesn't make sense.
Hot air rises naturally, cold air falls naturally, and the point of air flow in a grow box especially a micro grow box is not only to produce air throughout your crop, but to lower temperatures more to the ambient room temperature. This means for the most ideal cooling setup in your case you should have your largest fans in the back top of your case (pulling air immediately away from your lighting is best even though it's CFL it still produces some form of heat that if left unattended will make your box hot) and the smaller fans in the bottom front of your case, but also your exhaust setup should be capable of cycling the air in your box at least 5 times per minute. You are working in an area no where near larger than 4 cu sq/ft. If you have
a single fan that moves 80 CFM that means it moves 80 Cubic Feet (of air per) Minute. One fan with an 80CFM rating alone would cycle your entire grow box 20 times in a minute using nothing but itself and passive air intake. You aren't cooling blazingly hot PC components where all those fans are necessary. You are trying to bring your box temp down to that which matches your room. If your room is 72 degrees, and you are cycling air in your box 20 times every minute, your box temperature is going to most likely be 72 as well because 20x a minute is overkill.
EDIT: Just wanted to let you know as well that all of this is based on the paper theory that your box is sealed and air flow is allowed only through the holes given. Obviously if you have an 80 CFM fan in the back, and then your entire front of your case is open (i.e. one huge passive air intake) then your cooling solution is not going to be effective.