2x2x5'3 400w cooltube, Only 2 fans? will this work? drew picture

H

henryy

Member


Keep in mind its 2x2x5'3 in my closet.

Trying to keep it simple..
  • 400w hps 6inch cooltube to 440 cfm inline fan to carbon filter (muffled)
  • 240 cfm fan intake fan
  • 1 or 2? oscillating fans


My goals:
  • as quiet as possible
  • under 82f
  • energy efficient
  • good ventilation


I'm open minded to all suggestions.

Thanks in advance! :mrgreen:
 
bluntmassa1

bluntmassa1

Well-Known Member
it should work as long as your outer room don't get too hot I also think you could do without an intake. 1 oscillating fan should be fine as long as it hits all the plants. I also think the muffler should be on the other side of the outake fan and if you could keep your outake duct straight I would do that cause I forget how much cfm you loose on a 90 degree turn but its quite a bit.
 
ru4r34l

ru4r34l

Well-Known Member
Put your filter in your grow tent (preferably at the highest point) and place your muffler after the fan, you'll get better use pulling air through your filter than pushing.

With a 440 fan you may have temps creep up past 82 depending on your daytime temps and when you run your lamps, but changing you muffler and filter will provide a world of difference.

regards,
 
mr2shim

mr2shim

Well-Known Member
You don't need an intake fan. That exhaust fan will be more than enough to suck air in passive. I have a 400w in a cool tube in a 20"x36"x60" tent and use a 4" 190cfm inline fan as passive.

You should run it Filter->>Inline Fan->> Cool Tube->>Muffler

It's more efficient to suck air into the carbon filter than to blow it out.

IMG_8073.jpgIMG_8074.jpg

This is mine, I don't run an intake fan. Works great. With an A/C on in the room my tent is in it's usually 77-79. With a/c off it doesn't get past 84. If you want cool temps, have your grow tent in a cool room.
 
H

henryy

Member
Thank you guys so much for the replies. I think I am going to try this out.

mr2shim said:
You don't need an intake fan. That exhaust fan will be more than enough to suck air in passive. I have a 400w in a cool tube in a 20"x36"x60" tent and use a 4" 190cfm inline fan as passive.

You should run it Filter->>Inline Fan->> Cool Tube->>Muffler


It's more efficient to suck air into the carbon filter than to blow it out.

View attachment 2365442View attachment 2365443

This is mine, I don't run an intake fan. Works great. With an A/C on in the room my tent is in it's usually 77-79. With a/c off it doesn't get past 84. If you want cool temps, have your grow tent in a cool room.
Click to expand...
Thank you so much for the pictures !
 
H

henryy

Member
ru4r34l said:
Put your filter in your grow tent (preferably at the highest point) and place your muffler after the fan, you'll get better use pulling air through your filter than pushing.

With a 440 fan you may have temps creep up past 82 depending on your daytime temps and when you run your lamps, but changing you muffler and filter will provide a world of difference.

regards,
Click to expand...
Will it stay under 85 for sure though?
 
ItsSaturday

ItsSaturday

Well-Known Member
henryy said:


Keep in mind its 2x2x5'3 in my closet.

Trying to keep it simple..
  • 400w hps 6inch cooltube to 440 cfm inline fan to carbon filter (muffled)
  • 240 cfm fan intake fan
  • 1 or 2? oscillating fans


My goals:
  • as quiet as possible
  • under 82f
  • energy efficient
  • good ventilation


I'm open minded to all suggestions.

Thanks in advance! :mrgreen:
Click to expand...
Your going to have heat issues I'll take a pic of my 2x2x6 setup when light are on and PM you with it so you can see how I did the airflow...

That setup will work if you want to run your A/C at 60-65 which is what I do, but any higher you will have heat problems.

You need 2 exhaust vents on top one pulling air from the cooltube and one pulling the hot air from the top. You'll want 1 8"x8" passive intake on the bottom and 1 active intake going to the other end of the cooltube... You'll also want an inline fan pulling the air through the cooltube on the exhaust side for more ventilation. You can put your carbon filters on your exhaust but make sure you have the fan pulling the air from the cooltube to the exhause vent to stop the smell... You won't need a filter on your cool tube as long as you have a complete cycle without pulling air from the room.

Also you aren't going to escape the noise from the fans it's almost imposible. So stick an osclating fan on top your box and leave it on to cover up the air flow sounds. This also helps disapate any smells. Stick dryer sheets in the tops of your vents too, to help with smell.
 
I

IndicaDom

New Member
ru4r34l said:
Put your filter in your grow tent (preferably at the highest point) and place your muffler after the fan, you'll get better use pulling air through your filter than pushing.

With a 440 fan you may have temps creep up past 82 depending on your daytime temps and when you run your lamps, but changing you muffler and filter will provide a world of difference.

regards,
Click to expand...
This is the best answer so far, without seeing how the scrubber is connected to the ducting, this arrangement would be the best. You want your fan outside your grow pulling air out of it.

mr2shim said:
You don't need an intake fan. That exhaust fan will be more than enough to suck air in passive. I have a 400w in a cool tube in a 20"x36"x60" tent and use a 4" 190cfm inline fan as passive.

You should run it Filter->>Inline Fan->> Cool Tube->>Muffler

It's more efficient to suck air into the carbon filter than to blow it out.

View attachment 2365442View attachment 2365443

This is mine, I don't run an intake fan. Works great. With an A/C on in the room my tent is in it's usually 77-79. With a/c off it doesn't get past 84. If you want cool temps, have your grow tent in a cool room.
Click to expand...
You say, Filter -> Inline Fan -> Cool Tube -> Muffler, that would be incorrect. As the other poster mentioned, you need to be pulling air through the scrubber, and you need to be using the muffler to muffle the exhaust stream from the inline fan. Also you have your fan inside your tent, which means you are adding contaminates and unnecessary heat to the grow area.

The way it should be is this...
 

Attachments

mr2shim

mr2shim

Well-Known Member
Some inline fans can't handle the increased air temperature of the HID light. The bearings inside the inline fans are rated to a certain temperature. My not cheap inline fan was running the way you posted for my first first grow. The continuous heat from the light running 12-18 hours a day eventually caused the bearings to fail and the seals started leaking. I now run it the way I stated with 0 issues. It's actually a bit cooler.

You wouldn't know this because you don't grow. IF you do, why not be so kind and prove it.

Also, air gets sucked into my scrubber first, then it goes through the inline fan and is blown over the light and out the tent. I guess I didn't explain it simple enough for you. The inline fan doesn't get hot at all. If you understood how they work you would know this. They cool themselves off actually by the way they are designed. I'm not sure what you mean by contaminates from an inline fan. I also have a filter screen at the intake so it won't suck in dust.

Why would you have the inline fan outside the tent? Putting it inside the tent muffles the sound a bit. I should know, I've tested many different ways with my setup. Have you? Oh right, you don't have a setup.
 
I

IndicaDom

New Member
mr2shim said:
Some inline fans can't handle the increased air temperature of the HID light. The bearings inside the inline fans are rated to a certain temperature. My not cheap inline fan was running the way you posted for my first first grow. The continuous heat from the light running 12-18 hours a day eventually caused the bearings to fail and the seals started leaking. I now run it the way I stated with 0 issues. It's actually a bit cooler.

You wouldn't know this because you don't grow. IF you do, why not be so kind and prove it.

Also, air gets sucked into my scrubber first, then it goes through the inline fan and is blown over the light and out the tent. I guess I didn't explain it simple enough for you. The inline fan doesn't get hot at all. If you understood how they work you would know this. They cool themselves off actually by the way they are designed. I'm not sure what you mean by contaminates from an inline fan. I also have a filter screen at the intake so it won't suck in dust.

Why would you have the inline fan outside the tent? Putting it inside the tent muffles the sound a bit. I should know, I've tested many different ways with my setup. Have you? Oh right, you don't have a setup.
Click to expand...
Both the pictures you posted, and the description you gave are an inefficient arrangement. All motors produce heat, and fluid dynamics tells me you're wrong. I would put the fan outside the tent to reduce the reintroduction of contaminates, to remove excess heat from the tent, and to allow more space for sufficient airflow inside the tent. That is why, and yes I have tried many arrangements as well, and know who else have tried many arrangements? That is right, engineers, and they are kind enough to share the results of their efforts so we as citizens can utilize their knowledge. What you posted was inefficient, I'm sorry.
 
mr2shim

mr2shim

Well-Known Member
IndicaDom said:
Both the pictures you posted, and the description you gave are an inefficient arrangement. All motors produce heat, and fluid dynamics tells me you're wrong. I would put the fan outside the tent to reduce the reintroduction of contaminates, to remove excess heat from the tent, and to allow more space for sufficient airflow inside the tent. That is why, and yes I have tried many arrangements as well, and know who else have tried many arrangements? That is right, engineers, and they are kind enough to share the results of their efforts so we as citizens can utilize their knowledge. What you posted was inefficient, I'm sorry.
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All motors produce heat yes, but like I said it's designed to cool itself. If you had an inline fan of your own you would know this. The fan is mounted up high to where airflow is null. Air needs to flow around the plants. Last time I checked my plants don't grow past the light and up to where the fan, filter and light are.

How about this, instead of posting your rants. Why don't you go get a temp probe and put it against your inline fan and report back to us with it's temp. You must be doing something wrong if your fan is hot. Mine is cold to the touch. Still not clear on what contaminates are in the tent because the inline fan is inside the tent.

Words are just that, words. My grow speaks for itself. What speaks for you? Oh right nothing. The proof is in the pudding buddy. You have no pudding, just the ingredients you googled.
 
I

IndicaDom

New Member
mr2shim said:
All motors produce heat yes, but like I said it's designed to cool itself. If you had an inline fan of your own you would know this. The fan is mounted up high to where airflow is null. Air needs to flow around the plants. Last time I checked my plants don't grow past the light and up to where the fan, filter and light are.

How about this, instead of posting your rants. Why don't you go get a temp probe and put it against your inline fan and report back to us with it's temp. You must be doing something wrong if your fan is hot. Mine is cold to the touch. Still not clear on what contaminates are in the tent because the inline fan is inside the tent.

Words are just that, words. My grow speaks for itself. What speaks for you? Oh right nothing. The proof is in the pudding buddy. You have no pudding, just the ingredients you googled.
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Your grow room isn't sterile, stop pretending it is. I never said the fan was hot, I said the fan produced heat, which you just agreed with...lol. It is so amusing watching you struggle to come up with anything to try and argue with me about, you are misinformed about a lot of things, and the properties of airflow are one of them.
 
mr2shim

mr2shim

Well-Known Member
IndicaDom said:
Your grow room isn't sterile, stop pretending it is. I never said the fan was hot, I said the fan produced heat, which you just agreed with...lol. It is so amusing watching you struggle to come up with anything to try and argue with me about, you are misinformed about a lot of things, and the properties of airflow are one of them.
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I can't help it my grow tent can't be as sterile as your invisible grow room.
 
mr2shim

mr2shim

Well-Known Member
IndicaDom said:
No worries, maybe some day you will be able to work in a professional grow environment and understand what is possible.
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Yea maybe one day I'll get that chance to work in a pretend professional grow like yourself. That must be great, but I like to live in reality.
 
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