New Grow Room Advice

hey i have been thinking abvout the exhaust/carbon filter/intake filter setup in my small space.

Do you see any issues with me having the exhaust fan and carbon filter outside the grow tent but inside the cupboard? that way i can maximize the grow space and just have the ducting running into the grow tent through the holes? Is this feasible or should i have the exhaust fan and carbon filter inside the grow tent?

also, do about the power im worried now as i dont want it to work backwards lol how can i be sure the exhaust fan is running more powerful than the intake when its all setup? is there a way to make the ijntake fan run alittle less powerful so as to not screw this up?

What would you do in my situation here?


Thanks in advance.. :)

It should be fine. Unless you have lots of ducting you won't have a problem. You can put the filter outside, just try to minimise the amount of ducting you have to use.

Awesome, thank you :-)

One last question, I wired up the exhaust fan/carbon filter etc, to see if it worked.. and it does great :-) Problem is, it sounds like an aircraft in my closet.. I have to sleep in this room lol and didn't think about the noise it would make. Now I am thinking about how best to soundproof the room/closet that the grow tent is in... do you have any ideas how i can do this successfully? :)

thanks again!

You can surround the noisy parts with foam or old clothes or a towel or something, this will help with the vibrations. If you google it there are lots of people who have different ideas on how to silence a fan.

Also, plants don't need any CO2 when the lights are off. If you are only venting to keep a supply of CO2 then you can turn it off during the night. If you have high humidity you might have to leave it on during flowering to stop mould from growing on your buds, but if humidity or temperature is not a problem for you then once the lights go off the fans can go off.

OK so maybe i'll do an 18/6 light cycle on these auto flowering seeds.. and keep everything off for those 6 hours, still need to dampen the sounds though. Hopefully when its all installed i can wedge towels/clothes in between the closet walls and the grow tent to dampen the sound.. will be a challenge ! :)

thanks again

Hey,

So I have set the grow tent up now in the closet and everything is up and running except no plants in there.

I have left the light on 24/7, with the extraction and intake running full power (not that i can control the power). I places the hygrometer in there and left it for a 24 hour period.

Just checked the hygrometer in the room and the temps are:

85.6 degrees farenheit temperature in the grow room and

48% relative humidity.

Now from what i've read the perfect temperature is 70 - 75 degrees fahrenheit.. and mines 10 degrees more than that, and I know anything above 90 is BAD! :-(

So I am worried that when i put the plants in the room the temp is going to go up a little bit and possibly RH go up to. So, RH is at an acceptable level... what can I do about the temperature, i've tried moving the ducting/exhuast etc around, no difference, i've opened up the vents and all flaps on the tent, no difference.

I currently have the exhaust fan exhausting to the top of the tent, and intake comming in from the bottom of the tent.. i don't know what else i can do to bring the temps down?

I am running one 300wat cfl as described in my earlier posts...

so onto the questions:

1) what can i do to bring temps down a bit?
2) is the temp i currently have really that bad? can i successfully grow in it?


Some info, the external closet door is closed MOST of the time as to not avoid attention. HOwever if i open it - it drops tempt by 1 or 2 degrees but it stays in the 80's.. i can't make any physical reconstructions to the closet/house to vent externally out of the closet because its rented accomodation....

so what are some tricks of the trade to bring temps down? please help?

thanks in advance!

Hi,

I think 85 will do, try to keep the door open as much as possible, but once it doesn't go much higher than 85 it should be fine. The only way I can think of reducing the temp is to somehow get cool air from outside or exhaust the warm air to somewhere else.

Even though 85 is fine, you might have high humidity levels. It's fine throughout vegging but for the last couple of weeks of flowering you might want to keep humidity under 40% to stop mould growing on your buds if they are really thick.

All I can suggest is leaving the door open as often as you can or finding a way to get fresh air into your room. A dehumidifier or air conditioner would work but it really isn't worth it for a small grow space. Try it out and see how it goes. In my opinion your only real problem is the high humidity for the last couple of weeks of flowering.70-80% humidity and temps of 80-85 shouldn't be a problem the rest of the time.

Hey,

OK, so the temp has leveled to 82.5 since i've exhuasted to the cupboard above and im going to rip up a floorboard in the grow tent cupboard and intake from underneath the floorboards hopefully this will help more.

I will leave the doors open as much as i can. The humidity is currently stable at 31% is this OK? baring in mind i've got no plants in there yet so I assume that will rise due to plants drinking water etc.. if not i can always place a bowl of water high up so that i can bring it up to 40%?

Well a couple of the seeds have germinated so im tempted to pot them tonight or tomorrow (as i still need to intake from under the floor boards, might leave it till tomorrow to do).

Will keep you posted as I am growing, may start a diary to keep track of it :-)

Thanks again.

You will have to measure the humidity when you have larger plants in the room. By the time they are a foot tall you will probably have a much different humidity reading. 90-100% is best for small seedlings, 70-80% for vegging and under 40% for late flowering. The most important one is to keep humidity down during the end of flowering. If you have a different humidity level for vegging they will still grow. High humidity for the first week or two stops the seedlings from drying out, which can happen easily if the lights are close to the canopy, and it will stunt growth for a few days/weeks. A plastic dome of some sort is good for babies. Higher temps usually lower relative humidity and vise versa.

And good luck :)

Hey,

OK cool.. got all my babies in there now.. all 9 :-) 3 afghan kush ryders and 5 g13 labs pineapple express.

What are some good ways to control humidity then? How can I keep it low and how can I keep it high for the different phases? I currently placed a bowl of water in there to try and higher them RH for the seedlings.. as its at 37% now.

I am going to go and buy a couple of clip on fans probably two of them to go ont he sides of the tent.. will take pictures later and start a grow diary thread so keep your eyes peeled :)

Thanks again!