First Grow blues..

RyanTheRhino · Nov 18, 2012

Honda Cog said:
i did try this and the temp raised to 37 with the intake off,but it is a cheap bathroom fan.
also i checked the wiring and flow of the inline last night,done the tee shirt pull test but i couldn't feel if the fan was pulling more or less.
I heard a TT125 can be wired to increase speed.?

I just added a long (foot tall column) oscillating fan to the room out the grow space will run a test for an hour to see if that helps.

I'm a total noob in growing but trust me i have done a lot of research and watched loads of videos on what i should be doing etc..
when the shop ask me if i wanted to upgrade from 4" i was thinking to myself at least i won't have heat issue with a 5" fan....

Thanks for the help ryan,keep the ideas coming and i'll test them.

you are probably not going to like this ,but i think you have done everything you can do. You may need a larger fan.

Only two test left if you feel up to it.

1.) try to lower the temperature of your intake area.
2.) Disconnect that carbon filter and see if it cools the room, if so you are gonna need a bigger fan to pull air through that beast of a carbon filter.

unfortunately a larger fan will be even louder
You were referring to a noise box before. If you want to make one you don't need to enclose the entire room. just build a box to fit around the fan, fill it with something soft.

Honda Cog · Nov 18, 2012

RyanTheRhino said:
you are probably not going to like this ,but i think you have done everything you can do. You may need a larger fan.

Only two test left if you feel up to it.

1.) try to lower the temperature of your intake area.
2.) Disconnect that carbon filter and see if it cools the room, if so you are gonna need a bigger fan to pull air through that beast of a carbon filter.

unfortunately a larger fan will be even louder
You were referring to a noise box before. If you want to make one you don't need to enclose the entire room. just build a box to fit around the fan, fill it with something soft.

Running test 1 now its nearly been an hour with the new oscillating in the ambient area.

I have been looking at acoustic box fans but are you saying i need to go bigger than 5"

sound is an issue because my grow room is in my livingroom under my stairs,im willing to bypass it till i dial the heat for my girls then work on the sound after.
I plan to kit my little heaven out and keep it running all the time.
I got the grow bug big time thanks for the help i will try anything and come pay day i will buy whats needed.
just don't want to waste my time growing if its not set up right.

Honda Cog · Nov 18, 2012

just checked after an hour and it was hotter (37degrees) with a fan out side the tent ? i'm so puzzled now...
turned the cheap inlet off and place the standing fan in the tent for a bit will try this then check.
after that i will try same set up but with in take on has well.
after that i will unhook the carbon and and test the inline..without the extra fan and with etc..

i have a friend with a ds90 he has a smaller CF i will see if a switch will help i did wonder if the CF was to big but didn't think it could be a problem...

RyanTheRhino · Nov 18, 2012

Honda Cog said:
just checked after an hour and it was hotter (37degrees) with a fan out side the tent ? i'm so puzzled now...
turned the cheap inlet off and place the standing fan in the tent for a bit will try this then check.
after that i will try same set up but with in take on has well.
after that i will unhook the carbon and and test the inline..without the extra fan and with etc..

i have a friend with a ds90 he has a smaller CF i will see if a switch will help i did wonder if the CF was to big but didn't think it could be a problem...

those fans that you have on clips, did you move them to the bottom and tilt them up at the light?

you need a way for air to enter the cupboard form the outside. If you decide to take the carbon filter off check for anything that could be causing a clog

It is kinda weird. that fan should be powerful enough. other then the duct being rather long but that should not matter too much

Can you tell me the ambient temperature of the intake area

Honda Cog · Nov 18, 2012

RyanTheRhino said:
those fans that you have on clips, did you move them to the bottom and tilt them up at the light?

you need a way for air to enter the cupboard form the outside. If you decide to take the carbon filter off check for anything that could be causing a clog

It is kinda weird. that fan should be powerful enough. other then the duct being rather long but that should not matter too much

the cupboard has three vents on the staircase its self all unblocked.

I plan to buy a letterbox shap tube to connect the duct too the it will be only 1ft long and release air into the living room,then i will be pulling clean air from my kitchen for the intake.
but i cant do this till pat day..

i have move the 6" fans but they are proper weak hoping one powerful 7" oscillating fan will work better..

would a smaller CF work i only plan to grow 2-3 plants and no cheese strains

i guess i have 3 options really Ryan 1,buy a bigger inline. 2,go LED or 3,both...

RyanTheRhino · Nov 18, 2012

Honda Cog said:
the cupboard has three vents on the staircase its self all unblocked.

I plan to buy a letterbox shap tube to connect the duct too the it will be only 1ft long and release air into the living room,then i will be pulling clean air from my kitchen for the intake.
but i cant do this till pat day..

i have move the 6" fans but they are proper weak hoping one powerful 7" oscillating fan will work better..

would a smaller CF work i only plan to grow 2-3 plants and no cheese strains

i guess i have 3 options really Ryan 1,buy a bigger inline. 2,go LED or 3,both...

well i did a simple thermo calc and with that fan the intake must be at 28.5C to keep the room at 30C. Thats why I wanted to know your ambient temp just to see if the fan is even physically capable.

The ambient would be of the air entering the grow box

Honda Cog · Nov 18, 2012

right just check the tent.
it's even hotter 38.9 degrees now but i did have the thermo on the top of the fan this time...(closer to the light)
trying it with the the intake on this time but same set up..

soooo confused and frustrated now,Ryan are you saying i need a stronger intake ? before i do anything ? so do i need a intake with a higher CFM than my TT125.

do you want me to test the ambient temp on its own ?

any pics or angles you need i'll get them your helping me loads man.

RyanTheRhino · Nov 18, 2012

Honda Cog said:
right just check the tent.
it's even hotter 38.9 degrees now but i did have the thermo on the top of the fan this time...(closer to the light)
trying it with the the intake on this time but same set up..

soooo confused and frustrated now,Ryan are you saying i need a stronger intake ? before i do anything ? so do i need a intake with a higher CFM than my TT125.

do you want me to test the ambient temp on its own ?

any pics or angles you need i'll get them your helping me loads man.

I need the temp for the air flowing into the box. so outside the grow box at the intake fan. if that makes sense. I am trying to figure out if you need a bigger fan or you need a cooler ambient temp.

with everything running

sorry I dont mean to keep you running around I'm just trying to help, before you spend more money

Honda Cog · Nov 18, 2012

RyanTheRhino said:
I need the temp for the air flowing into the box. so outside the grow box at the intake fan. if that makes sense. I am trying to figure out if you need a bigger fan or you need a cooler ambient temp.

with everything running

sorry I dont mean to keep you running around I'm just trying to help, before you spend more money

mate i will do what ever it takes or tomorrow i will spend all day at work thinking it over,plus its easy to get too and im not doing much.

so you want me to remove the intake and place the thermo in the same place for a read of the airflow around the tent i.e. the air being pulled.

do you know how to change the speed of a TT125 fan ? im sure i did it right but its one other thing off the list....

RyanTheRhino · Nov 18, 2012

Honda Cog said:
mate i will do what ever it takes or tomorrow i will spend all day at work thinking it over,plus its easy to get too and im not doing much.

so you want me to remove the intake and place the thermo in the same place for a read of the airflow around the tent i.e. the air being pulled.

do you know how to change the speed of a TT125 fan ? im sure i did it right but its one other thing off the list....

you don't have to remove anything... just take the temp outside of the box. by the intake or wherever you are pulling the air from

Campo Cultivator · Nov 18, 2012

This is good advice you may find your bathroom fan which is sucking air into the room is impeding the airflow if it is less powerful than the outtake 125 mill with a good tent a passive intake is more than enough you should see the side of the tents sucking in on all sides 125 mills is a huge fan for such a small tent it should be like a howling gale in there I dont understand why your temps would be building to the light cycle
also whilst I am here a bit of info about temps....
where I live outside temps touch the 40's during the growing season and we grow some mean bud outdoors not saying your temps are a good thing but most plants will live with it
From what I can gather once you hit around the 32c mark the plant starts to put energy into cooling down so to answer your earlier question no the plants wont die but you will see a reduction in yield in all likelihood bruv
Try and relax with it dont forget growing is supposed to be fun

RyanTheRhino said:
Kinda at a loss here that fan you have should be able to pull the volume of your grow 4+ times per minute. I think i might know something that will help. disconnect the small bathroom fan from the intake. It is probably less powerful then your outtake causing a blockage of flow.

If you have an intake it has to be more powerful then the exhaust or else it is better to just have a passive flow.

Would this be difficult to disconnect just to see?

Honda Cog · Nov 18, 2012

RyanTheRhino said:
you don't have to remove anything... just take the temp outside of the box. by the intake or wherever you are pulling the air from

ok cool im on it now.

Honda Cog · Nov 18, 2012

Campo Cultivator said:
This is good advice you may find your bathroom fan which is sucking air into the room is impeding the airflow if it is less powerful than the outtake 125 mill with a good tent a passive intake is more than enough you should see the side of the tents sucking in on all sides 125 mills is a huge fan for such a small tent it should be like a howling gale in there I dont understand why your temps would be building to the light cycle
also whilst I am here a bit of info about temps....
where I live outside temps touch the 40's during the growing season and we grow some mean bud outdoors not saying your temps are a good thing but most plants will live with it
From what I can gather once you hit around the 32c mark the plant starts to put energy into cooling down so to answer your earlier question no the plants wont die but you will see a reduction in yield in all likelihood bruv
Try and relax with it dont forget growing is supposed to be fun

i was so excited about growing but this is taking the fun away,i believe you and Ryan have hit the nail on the head but when i place my hand on the CF it really doesn't feel very strong at all...i have just notice i could be losing some extracted air from the ducting i joined together and overlapped...can't fix it right now but it could be part of the problem.

the TT125 can't be working right the tent does not suck in like it did before..

read the temp test like Ryan asked but the girls sleep soon..

heres some pics you may see something i'm missing....

How my TT125 is set up

floor space outside the tent.

inside the tent

Honda Cog · Nov 18, 2012

right the reading was 28.9 from the area the intake is pulling from,but i'm guessing with me messing around so much today the temp would of been higher if left.

i think tomorrow i will strip it down move the extraction duct to the vent in the living room and pull clean air from the kitchen which mean the ambient space will be left free..

if that falls its pretty clear i need a better intake...

RyanTheRhino · Nov 18, 2012

Honda Cog said:
right the reading was 28.9 from the area the intake is pulling from,but i'm guessing with me messing around so much today the temp would of been higher if left.

i think tomorrow i will strip it down move the extraction duct to the vent in the living room and pull clean air from the kitchen which mean the ambient space will be left free..

if that falls its pretty clear i need a better intake...

Alright so the math says with that ambient temp you would need to move 192.66 Cubic Meters/Hour. This is an estimate assuming all the energy to the light is converted to heat, but at the same time ideal steady state process which is more efficient then real life. They should cancel to give a better estimate.

Note* : If the flow is less than required the temperatures will steadily increase , until the temperature difference between the in flowing air and the grow room air reach a critical point. That is the larger the difference in temperatures the more efficient the heat transfer process becomes. (max heat)

The specs for your fan are
low / high
148 / 214

So

1.) The fan is set to low while you were messing with it.

2.) The fan is on high but the carbon filter is impeding flow.

3.) The ambient temperatures are higher then recorded.

Options

1.) Find a better carbon filter with better flow.

2.) Find a way to lower the ambient temperatures.

3.) Use a stronger fan.

Do the cheapest option

Honda Cog · Nov 18, 2012

RyanTheRhino said:
Alright so the math says with that ambient temp you would need to move 192.66 Cubic Meters/Hour. This is an estimate assuming all the energy to the light is converted to heat, but at the same time ideal steady state process which is more efficient then real life. They should cancel to give a better estimate.

Note* : If the flow is less than required the temperatures will steadily increase , until the temperature difference between the in flowing air and the grow room air reach a critical point. That is the larger the difference in temperatures the more efficient the heat transfer process becomes. (max heat)

The specs for your fan are
low / high
148 / 214

So

1.) The fan is set to low while you were messing with it.

2.) The fan is on high but the carbon filter is impeding flow.

3.) The ambient temperatures are higher then recorded.

Options

1.) Find a better carbon filter with better flow.

2.) Find a way to lower the ambient temperatures.

3.) Use a stronger fan.

Do the cheapest option

That makes sense now..

1,i will rewire the fan tomorrow but to be honest i couldn't hear or feel a difference (but i will try that first.)

2,what do you mean impeding flow ? does that mean the carbon filter broken or blocked or its to big.

3,does this mean replace the intake (i have removed it for now) or cool the air in the area.
or replace the outline fan

Things im not clear on..

should i have the carbon hanging down or kept flat and up high ?

If the air being pulled in is increasing in heat because its moving to slowly around the tent before its sucked into the filter. (thats how i understand it)
Would a large fan blowing up not help my problem ?

how can you test if a fan is pulling right,i mean could my fan be broken
if a difference of 62 is true in my fans speed setting why can't i tell or hear it?

I cant do much now i will test what i can when i can,and work out what i need to buy on payday thanks to all.
i'm not giving up if your not,any more ideas are welcome thanks again.

RyanTheRhino · Nov 18, 2012

Honda Cog said:
That makes sense now..

1,i will rewire the fan tomorrow but to be honest i couldn't hear or feel a difference (but i will try that first.)

2,what do you mean impeding flow ? does that mean the carbon filter broken or blocked or its to big.

3,does this mean replace the intake (i have removed it for now) or cool the air in the area.
or replace the outline fan

Things im not clear on..

should i have the carbon hanging down or kept flat and up high ?

If the air being pulled in is increasing in heat because its moving to slowly around the tent before its sucked into the filter. (thats how i understand it)
Would a large fan blowing up not help my problem ?

how can you test if a fan is pulling right,i mean could my fan be broken
if a difference of 62 is true in my fans speed setting why can't i tell or hear it?

I cant do much now i will test what i can when i can,and work out what i need to buy on payday thanks to all.
i'm not giving up if your not,any more ideas are welcome thanks again.

Impeded flow basically means the same as clogged . Its limiting the fan from doing its job.

Stronger fan was referring to the outtake.

The way you hang the filter should not really matter.

A fan blowing up only moves the hot air around, it is the outtake that actually remove the hot air. There is enough hot air around the carbon filter already but it cant escape. Like a small hole in a dam it wont matter how much water is behind it. It will still take time to drain.

I don't know how to test the fan.

But why did you mention wiring. It says there is a nob to control the speed settings

Campo Cultivator · Nov 18, 2012

ok so the air you are pulling from is 28 did you say ??? well there would be your problem then bruv with a hid system I would like my intake air to be no more than 20c Also with that tiny tent the fan should be sucking in the sides I think you have a couple of problems here
you need to go through a process of eliminatio one thing at a time
If I was you firstly I would remove that cf and see how things run for 24 hours as a test at least then that would eliminate that from the equation and you can move on to the next thing

RyanTheRhino · Nov 18, 2012

this might help you

stonerDJ said:
hi guys n gals,
i have a TT125 Etraction fan and need to wire it to a mains plug (UK).
on the fan connector block ther is
N
LH
LL
wat goes where?
pls help me im gettin 105 degrees temps

well i am going to say that

N- neutral
LH- live HIGH setting
LL- Live LOW setting

so all you should have to do is replace

LH with LL to switch speeds . The two wires most likely just have different volt/amps running through them that produce different speeds.

Honda Cog · Nov 18, 2012

On my phone so limited to what i can do.
I will rewire early tomorrow check it.
Before work.
Then if needed i will drop out the CF and leave it.
My fan has one simple housing live and nutral in two hole and then a white and a black wires are crimped and screwed to the other side. Then a brown wire is capped off. I have only switched the black and white wires.
Falling that i have a new lay out i can try.
Thanks for your help guys i will report back soon.

First Grow blues..

Well-Known Member

Active Member

Active Member

Well-Known Member

Active Member

Well-Known Member

Active Member

Well-Known Member

Active Member

Well-Known Member

Well-Known Member

Active Member

Active Member

Active Member

Well-Known Member

Active Member

Well-Known Member

Well-Known Member

Well-Known Member

Active Member