Humidity and Temp/ Venting question

Hi guys, my seeds are cracking and i presume ready to plant in my solo cups soon, i have a 4x24" H.O. T-5 for initial veg, then switching to mh/hps (600w)for remainder, i did a test yesterday for temp and humidity with T-5 on, Temp is 70 and Humidity 62, im sure i can maintain both (also have humifier if needed ), and can actually get temp to 74 to 76 if needed, my question is this, im getting temp/humidity numbers with the 4x4 tent fully enclosed, including all flaps. i plan to use an oscillating fan and that's it for now, i see no need to engage larger fan with carbon till i get smell or switch to mh. my fear is opening flaps will drop temp too much, with my babies being ready i kind of dont have time for a couple days of testing, but i also realize exchange of fresh air required? any input i would greatly appreciate.

once you get that mh or hps yes it will get hot in that small tent so get a dryer flap and a fan. fan on 1 side of tent and dryer flap on other, also read about humidity, for your plant. no need to have a dehumidifier running for veg they love it 80 to 85 and humid 70 % ish will grow very fast. and yes I would hook the fan up no matter what if its to hot or not. because changing the air will help with the lower co2 levels yournot injecting it. so the ventilation will bring in new air to help out . instead of stale air.

Thanks for your informative reply.

Guaranteed you'll need a filter/inline fan when you switch to your MH/HPS. You'll almost certainly want a cooltube or air-cooled hood too.

Tents get hot very quickly. Even my 400w drives temps up significantly, and I have a cooltube/fan.

-spek

i have a 600w electronic on order, as well as cool tube reflector, also 6" fan and carbon im picking up this week. im all freakin giddy growing these plants!

always remember with tents, if youre not using ac/ units, that the air you drag from out side will be the starting temp of youre temp, like toady over here was 81f, then add the heat from you're cooltubes ect, ect, oc fans/humidifiers etc will help with a few degree drop, but thats it, it doesnt matter if you have 8 inch inline fans with speed control in a D90 sieze tent. you're need the starting air from out side to be winter cold to get a tent with hps/mh lighting with in range 72/76, from my exp anyway, ive been in grow tents about 7 years now.

i just been looking at the Dyson hot and cold fans today, ummm interesting, might be a way round the ac units for summer growing, but there expensive, like air cooling,