grow room temp.

I just germinated 45 AMS fem seeds and 5 fem. sweet tooth... There is eventually going to be 55 fem. lemon skunk, 10 fem. white widow, about 30 fem. big bang, 8 big bud, about 15 bag seeds, 10 northern lights, 10 #1 skunk, and 1 fem. durban poison in there as soon as the other seed bank orders come in the mail.. along with these 50 seeds that i have in there right now.

My grow room is 10 by 6 and is a stadium set up enclosed in panda film with 4 shelves on each side.

I'm using 2 1000 watt hps and 1 400 watt hps. I have a single fan in there and am adding 2 more oscilating fans...

right now the temp. in the is about 97 degrees F. is that too hot of a temp. for the plants to grow in? if so, how can i get the temp. down?? I have to keep the lights on 18 hrs a day for the veg. cycle.

And the humidity is 38.. im afraid that with a humidity that low the seeds wont even sprout out of the soil...

over 85+ is too high in my opinion. you can lower the temperature by using an A/C system, and also by using air cooled reflectors such as Radiant AC Reflectors or others available at bghydro.com or insidesun.com or your local hydro shop.

Try the extremely high temperatures is what is going to make your seeds not sprout. Think about the plants man, don't put them in a horribly hot room and kill 'em. Get some better ventilation or something or maybe lose a light or two. good luck

Tom

you will need ducting and fan... I recommend you review the products listed here: Exhaust Fans | Duct

yes 97 degrees is too hot for them
i found this for you in the GrowFAQ

A humidity and temperature gauge are essential in any growroom. Daytime conditions should be 70-80 degrees without co2, 80-90 degrees with co2 until the last two weeks when daytime temps should be kept between 70-80 and co2 can be reduced to adjust for the lower metabolism. Night temperatures should be kept above 60 degrees to prevent stress. It is preferrable during flowering to have a night temperature drop of 10-20 degrees to stimulate flowering hormones and reduce stem elongation.

I find that low humidity causes stress on plants. I recommend 50-60% humidity until the final 2 weeks of flowering. At this point, the humidity should be lowered as much as possible to encourage the plant to seal and protect itself with additional resin. (I am able to get the humidity to go as low as 31%) I have been able to frost things up considerably this way. The higher humidity levels prior to final ripening reduce salt levels within the plant tissue and encourage healthy, more lush growth.

what should i do in the meanwhile since i already put 50 germinated seeds into the growbags in that room?? should i pin up the flap of panda film at the entrance of the room so more air can escape??

Im definitely going out and buying an exhaust fan tomorrow morning but there is nothing i can do other than that now.. if someone has any advice id really appreciate it.
Thanks!!

Oscillating fans, open windows, open doors, increase airflow as much as possible.

I hope you don't have a dayjob lol. How are you gonna walk around a room 10x6 with 244+ plants in it? Maybe i'm mistaken.

i propped open the "door" ( a flap of panda film) of the grow room for now and turned off the 400 watt lamp. (so now there is 2000 watts left on) the temp. has dropped down to 86 degrees. will all of this light escaping because of the opened entrance make that big of a difference in the next 12-16 hours or are my plants still safe??

at 97F they will die as soon as sprouted, just have the 400 W light on until you get the temps under control, that will help immensely, all 50 plants can grow fine under the 400 for a week or 2 until they get too big.

Thats perfect advice NoDrama, +rep for you!

Tom

I hope that you have hoods that can be ducted and air cooled. In ADDITION to an intake and exhaust for your grow room air you also need a dedicated system to put air through your light reflectors and out a separate exhaust. Separating your lighting air from your grow air will drop your temps down to acceptable levels.

im actually not even using hoods.. im doing a stadium grow with bare bulbs..a lot similar to this design:

only difference between mine and his obviously is that i do not have an exhaust fan... which i am going to buy hopefully tomorrow morning.. i am using 2 1000 watts and 1 400 whereas he is using 3 1000 watt hps's and mine is a smaller scale with just 4 shelves as opposed to his 5.. so it can fit just about 180 plants.

I just purchased 2 6 inch oscilating fans and 1 180 CFM dayton exhaust blower with a 4 inch outtake flange. will this decrease the temperature by a lot??

It should def help with temps thats for sure, I cant say how much though. How are you going to be using the fans? Dayton blower for outtake I'm guessing but what about the other two 6 inch fans?

Tom

the 2 6 inch will just help with air circulation im going to put them on both sides of the entrance pointed towards the back of the room where the outtake will be

by turning off the 2 1000 watt lights and leaving on just the middle one (400 watt) the temp went from 97 degrees all the way down to 82 degrees (great advice No Drama!)

im just worried about when the other 140-something plants are in the room (im definitely going to have to turn on all 3 lights).. im hoping the dayton 180 CFM outtake along with the 2 oscillating fans will keep the temp. at least in the 80's

27c is the way to go..24/7

how long do the germinated seeds take to sprout up above the soil after i transferred them from the wet paper towels???