Grrr, Fuck!!! Two light cooltube still hits 95

Thread starter Hulk Nugs
Start date Oct 14, 2009

Hulk Nugs

Well-Known Member

#1

Alright been messing around with my light setup trying to get it dialed in before i start the grow.

I have a 4'' canfillter, hooked up to a 4'' canfan155cfm, then it Y's two both lights 400wat hps/400wat mh, on the hps i hooked up a 4" PC fan 85cfm to the back, then theres a Y that both lights are hooked up to, ducing from the Y to another 4" PC fan 85cfm that goes out.

Planning this i thought it was going to work, but nope still both cooltubes are hot to touch and the room still gets above 95 :wall:

:wall:

Anyone have something that might work, i am still working on it hahaha gotta keep plugging away until something works so while i wait in between room test and doing different setups i thought i would make a thread see if any one could throw a good idea at me. I am all ears, trying to keep both lights i know i could make it work if i got rid of one.

bongsmilie

bongsmilie

for everyone helping

Astaldoath

Well-Known Member

#2

Hulk Nugs said:
Alright been messing around with my light setup trying to get it dialed in before i start the grow.

I have a 4'' canfillter, hooked up to a 4'' canfan155cfm, then it Y's two both lights 400wat hps/400wat mh, on the hps i hooked up a 4" PC fan 85cfm to the back, then theres a Y that both lights are hooked up to, ducing from the Y to another 4" PC fan 85cfm that goes out.

Planning this i thought it was going to work, but nope still both cooltubes are hot to touch and the room still gets above 95

Anyone have something that might work, i am still working on it hahaha gotta keep plugging away until something works so while i wait in between room test and doing different setups i thought i would make a thread see if any one could throw a good idea at me. I am all ears, trying to keep both lights i know i could make it work if i got rid of one.

for everyone helping

You need a higher CFM fan to cool your lights

im using a 240 cfm 6" duct fan to cool my 400 hps and it still gets to like 80-90 in the room when the ambient is 70 (i dont have an active intake)

Im wishing i woulda bought the 8inch light housing and used a 440 cfm 8" fan

Hulk Nugs

Well-Known Member

#3

your only running one light ??

i should be up to 235 cfm on the cooltube setup with all the fans

I was thinking about buying two more pc fans and redoing my light setup with two pc fans per light front and back and still have the canfan hookedup to the lights with the canfilter.... it would be one heavy light fixture and another 60-80 bucks for the pc fans hmmm that would be up to 395cfm

still thinking gotta think :wall:

:wall:

, it can be done with out more money :cuss:

:cuss:

i hope.

Hulk Nugs

Well-Known Member

#4

anyone ??

:-?

:confused:

robert 14617

Well-Known Member

#5

have the lights on a separate fan sealed intake and exhaust outside and a fan for the carbon filter to exchange air in the cab,no restriction from the filter will help cool the cab

tom__420

Well-Known Member

#6

http://www.plantlightinghydroponics.com/valueline-centrifugal-fans-c-76_629.html

I would look into one of those fans instead of tinkering around with CPU fans

robert 14617

Well-Known Member

#7

i agree with tom420get real fans

Hulk Nugs

Well-Known Member

#8

robert 14617 said:
have the lights on a separate fan sealed intake and exhaust outside and a fan for the carbon filter to exchange air in the cab,no restriction from the filter will help cool the cab

I cant make any more holes in the house to the outside i was going to take some fresh air for the intake but i have to setall on the house air.

I could maybe make another hole inside the bedroom wall and take air from the house to cooltubes then the outside, going to look into that one.

Hulk Nugs

Well-Known Member

#9

tom__420 said:
http://www.plantlightinghydroponics.com/valueline-centrifugal-fans-c-76_629.html

I would look into one of those fans instead of tinkering around with CPU fans

Man i would love to have another nice big fan but theres barley any room in there for it, if i do put it above the grow then i am limited on how tall the plants can grow and right now thats the only place it would fit. Thats why i just decided on the pc fans i get the same cfm out of them as the 4" fan on that link.

Rooms not really done yet but if you want real pics of what the room looks like and how much space i have just ask.

Thanks for all the help guys keep it coming been thinking about it .... i keep walking in there trying to have the idea just hit me

Going to go take a rip and go think about what robert said .... not really big on making another hole but what has to be done has to be done :wall:

:wall:

keep those ideas likeing what i am hearing!!

tom__420

Well-Known Member

#10

http://www.bghydro.com/BGH/itemdesc.asp?ic=AEFA04&eq=&Tp=

Maybe a try out a few of these fans
They are rated 105 CFM a piece

Hulk Nugs

Well-Known Member

#11

tom__420 said:
http://www.bghydro.com/BGH/itemdesc.asp?ic=AEFA04&eq=&Tp=

Maybe a try out a few of these fans
They are rated 105 CFM a piece

Very nice, thanks for the link man. those would work.... going to start thinking of plan B for the room ......

....I waited three hours and the room got up to 101temp 39 humidity some of the ducing tape came loose from the DIY cooltubes....

.... its been about a hour with lights off and only fans going and its still 86 temp 45 humidity

grrr

nordowell

Active Member

#12

Hulk Nugs said:
Very nice, thanks for the link man. those would work.... going to start thinking of plan B for the room ......

....I waited three hours and the room got up to 101temp 39 humidity some of the ducing tape came loose from the DIY cooltubes....

.... its been about a hour with lights off and only fans going and its still 86 temp 45 humidity

grrr

you need some real fans. the mention no room for a bigger fan, the fan does not need to be located in the room. heres al b fucts diagram.

wyatte

Active Member

#13

As a mechanical engineer I am telling you you NEED a larger fan. Screw bgh and any online grow shop. Money is apparently an issue since you are using pc fans... do this... and this is how my setup is.... 1 - 500 cfm fan (8 inch) from lowes. Will run you about 40 bucks. IT is in their HVAC section. If you are running 6" tubing get two 6 to 8 inch adapters. They will run you about 7.50 each. Put the fan BEFORE the light. Most common mistake is putting the fan after the light.
It is mathematically and scientifically proven to actually be better to have the fan Pushing air instead of sucking it through the light. (dont know what happened but my font size changed)

The one 500cfm fan cools my 1000mh just fine. Keeps the room nice and cool.
Dont throw the computer fans away use them to vent the box or room. (depending on how large your set up is) You can push air in and out of the box very easily with the fans. As your grow gets larger, you can upgrade the fans to a larger size.

Contact me if you need help with any engineering problems or hits about how to build something. Dont contact me if you have a grow issue... Im on the engineering side.
Cheers

Hulk Nugs

Well-Known Member

#14

nordowell said:
you need some real fans. the mention no room for a bigger fan, the fan does not need to be located in the room. heres al b fucts diagram.

Thanks for the idea but i am trying to keep everything in the room so you dont know the grow is there

Hulk Nugs

Well-Known Member

#15

wyatte said:
As a mechanical engineer I am telling you you NEED a larger fan. Screw bgh and any online grow shop. Money is apparently an issue since you are using pc fans... do this... and this is how my setup is.... 1 - 500 cfm fan (8 inch) from lowes. Will run you about 40 bucks. IT is in their HVAC section. If you are running 6" tubing get two 6 to 8 inch adapters. They will run you about 7.50 each. Put the fan BEFORE the light. Most common mistake is putting the fan after the light.
It is mathematically and scientifically proven to actually be better to have the fan Pushing air instead of sucking it through the light. (dont know what happened but my font size changed)

The one 500cfm fan cools my 1000mh just fine. Keeps the room nice and cool.
Dont throw the computer fans away use them to vent the box or room. (depending on how large your set up is) You can push air in and out of the box very easily with the fans. As your grow gets larger, you can upgrade the fans to a larger size.

Contact me if you need help with any engineering problems or hits about how to build something. Dont contact me if you have a grow issue... Im on the engineering side.
Cheers

Right on a engineer i would like to become a engineer someday.

I do have a question to ask ........... i just took apart my cooltubes and purchased 2, 122 cfm fans, and i also have 2, 85cfm fans ...... i hooked the cooltubes up so the 85cfm fans are in front blowing on the bulbs and then theres the 122 cfm in the back of the cooltube sucking air out of the cooltubes. two fans per light 207 cfm per light, think that should work for the lights ??

stoendpirate

Member

#16

Do not buy cheap inline fans. Invest in a Can or Vortex and you'll be happy. Valueline and cheap ones make lots of noise and have inflated cfm advertisments

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