Setting up small grow in bathroom.Temp too high and Humidity too low! Need advice asap! Please help!

[a senile fungus]

Yes, but at least it'll pull some of that hot air out from the ceiling area... It'll be better than nothing, and certainly won't hurt IMO

 

[ProHuman]

Of course, anything is better than a fan blowing the same air around.
OP is worried about losing his CO2, but there is plenty of CO2 in the fresh air.
I never add CO2 to my plants, they never needed it.

 

[SonOfSpace710]

A bathroom exhaust fan does not have too much power.
If there was a way to attach a centrifugal fan to the exhaust duct in the ceiling, that would make a huge difference.

I will try running the ceiling fan this evening when the lights come back on to see if it helps. Im just afraid that without ducting to the actual light it won't cool it much and will just pull out all my humidity and co2. When i get my new light setup i will run a duct from the ceiling exhaust fan to my reflector hood possibly with another fan in there since the ceiling exhaust fan is not very strong. I probably dont need to worry about losing my humidity through venting if ive got that swamp cooler goin.

 

[SonOfSpace710]

Of course, anything is better than a fan blowing the same air around.
OP is worried about losing his CO2, but there is plenty of CO2 in the fresh air.
I never add CO2 to my plants, they never needed it.

The only reason im worried about losing my co2 is my temps are high and humidity was very low. Humidity is better now. I only put the co2 in to compensate for those problems. If i get those problems under control i dont need to have the co2. My thinking was that the ceiling fan wouldnt help much and whenever the door is left open the humidity starts to drop rather quickly. I will try the ceiling fan with the door shut this evening to see if i get better results.

 

[a senile fungus]

I'd say the biggest issue is that you should have fresh, cool air coming in, and somewhere for old, warm air to go out.... That alone will do wonders for your cooling problem.

 

[SonOfSpace710]

I'd say the biggest issue is that you should have fresh, cool air coming in, and somewhere for old, warm air to go out.... That alone will do wonders for your cooling problem.

So today i turned the ceiling exhaust fan on and switched the fan blowing on my plants to a smaller one ( i read that to much air moving over your plants will dehydrate them quickly) and my temps are the same if not a little higher and like i feared my humidity has dropped. Could this be because i dont have any intake. I really feel like more air moving through the room is just gunna destroy my humidity. I got a larger exhaust fan i can put in the ceiling and ducting to run from that to my reflector and a vent for the door for intake. O i also got an automatic adjustable thermostat i may use to have the fan kick on when it gets to a certain temp and shut off when its cooler, havent decided yet. I guess im going to put the vent in tonight or tomoro to see what that does but im really confused about how any humidity will stay in the room if the air is constantly changed.If someone could explain this to me id greatly appreciate it.

 

[ProHuman]

I have grown in dry rooms before. Humidity is not as big of a deal as temperature.
Did your temps go down with the exhaust?
Once your temps are good, you can raise humidity with a humidifier near your plants.

 

[SonOfSpace710]

I have grown in dry rooms before. Humidity is not as big of a deal as temperature.
Did your temps go down with the exhaust?
Once your temps are good, you can raise humidity with a humidifier near your plants.

 

[SonOfSpace710]

My temp went down a little. I just added a vent in the door to the room for intake. I put a screen between the vents to block some light but it doesnt seem like much air is moving through it. I might remove the screen. I may have to upgrade the fan in the ceiling but im thinking i will wait till i get my new light to see how hot it is.

 

[HankDank]

go LED and eliminate those stupid high temp problems all together. Without spending all your money on having heavy duty ventilation to counter the current issue your having.

 

[SonOfSpace710]

go LED and eliminate those stupid high temp problems all together. Without spending all your money on having heavy duty ventilation to counter the current issue your having.

I was considering going with led but i was unsure if an led that would be good for my space would be in my budget. I havent really spent much money on trying to get this exhaust right. The new fan i got was free and the vents and ducting didnt cost much. I ended up ordering an apollo 600w mh/hps ballast with reflector from eBay for around 150 im expecting that even with the extra wattage it will run cooler than my current 400w light. With the addition of the vent in the door im gettin 83-85 and my humidity is around 40-45. Ive been misting every few hours to add humidity. Things are starting to get under control and i believe my new light will help. Plants look pretty good considering how much ive been freakin out about this haha.

 

[ProHuman]

Glad to hear you got a better environment.
I am sure your plants will be happy, and flourish, now.
If you are getting a new fan, may I suggest you get one with a speed control knob.

 

[SonOfSpace710]

Day 24 for most of them ( not all my seeds germinated at the same time). Changing lights to 12/12 when they get around six inches to sex them.

 

[SonOfSpace710]

Glad to hear you got a better environment.
I am sure your plants will be happy, and flourish, now.
If you are getting a new fan, may I suggest you get one with a speed control knob.

I was thinking about that. I have an automatic adjustable thermostat, that you set the temp you want the fan to come on at, i was considering using. Do you think that would have a similar effect? Only coming on when the heat gets above a certain temp or controlling the speed of the fan with a knob so its not moving to much air. What do you think would be best. And for some reason i feel like theres a warning on the fan not to use a speed controller. Ill double check.

 

[SonOfSpace710]

So it says suitable for use with solid state speed controls.

 

[ProHuman]

Whatever way works best for you, as long as you can control the fan.
With a timer, or a speed controller, either way, you can adjust it to optimize your area.

 

[a senile fungus]

So you have two fans right? A new one that is more powerful than the bathroom exhaust and the old bathroom exhaust?

If I were you I would set up the newer, stronger blower where the bathroom ducting is and set it to be on all the time, then setup the less powerful bathroom exhaust fan with the thermostat control and mount that sucker on the bathroom door. This way, you constantly have exhaust and when needed can pull extra fresh air in.

I really think you're biggest issue is that you need fresh air coming in.

Also setting up a bigger fan constantly on and the smaller one as needed will maintain a negative pressure, and help with smell control...

 

[OscarLaGrouch]

My veg is in the bathroom and i had the same problems. I run 3 2'x4' T5 panels so its a fair amount of heat. For heat and excess humidity exhaust i got a 6" CAN filter and fan and ran the duct out through the bathroom exhaust. I got a small humidifier from Target that i fill daily. Now its like 55 RH and no hotter than 85 with the door closed. The exhaust creates negative pressure on the surrounding rooms and draws fresh, CO2 rich air in constantly.

 

[OscarLaGrouch]

It scrubs your air and exhausts heat. It draws co2 out but thats 10 bux a bottle. The only bummer is u have to add humidity because it exhausts that too.

 

[SonOfSpace710]

So you have two fans right? A new one that is more powerful than the bathroom exhaust and the old bathroom exhaust?

If I were you I would set up the newer, stronger blower where the bathroom ducting is and set it to be on all the time, then setup the less powerful bathroom exhaust fan with the thermostat control and mount that sucker on the bathroom door. This way, you constantly have exhaust and when needed can pull extra fresh air in.

I really think you're biggest issue is that you need fresh air coming in.

Also setting up a bigger fan constantly on and the smaller one as needed will maintain a negative pressure, and help with smell control...

Im thinking that might just be the way to go. I ran ducting from the ceiling exhaust fan. to right above my light to draw the heat directly from the source and i put a fan outside the vent in the door to blow in fresh cool air.Still running my swamp cooler 24/7, it currently only has a 4 inch massey personal fan i might switch to a 6 inch black and decker for more humidity.For the last 2 days it has not got above 79 and the humidity no lower than 40 but usually staying around 50 or higher from misting.Much better than 93 and 25 haha.