Need Help w/Cooling 5x5x6'8 tent 600watt

AttackOnDabs

AttackOnDabs

Member
Hi everyone this is my first grow and I need help cooling my tent.
Here are the details of my grow.
Using a dimmable 600 watt air cooled hood
Have that connected to a 6" inline fan 440cfm.
I have it connected using a passive intake and just keep 3 bottom flaps open
I have 2 fans inside and temps are still reaching 90+

My question is do I need another inline fan for intake?
And if so, would a 4' inline 190cfm be enough
I was planning on getting that with a dust shroom and a
Titan mercury 4 multi function fan speed controller so it will turn on when temps get to hot and off when it gets cooled.

Just want to know if I'm headed in right direction this is my first grow and want it to be a good one.

I have 9 Code Blue seedling in early stages of veg about 1 week old

I won't be able to get this stuff for another 2 weeks due to budget and wonder if ladies will be fine until then.

Thanks your
 

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Squidbilly

Squidbilly

Well-Known Member
This is my first time using tents and I had to figure somethings out as I went.

People will tell you that you can get away with less, but it will be a constant battle.

Get a 400cfm 6" on a fan speed controller for an active intake.

Get a 200cfm(or higher) fan JUST for your air cooled hood-this doesn't have to be on a speed controller sicne it's cooling your lights it should be on full tilt while your light is on.

Then use the 400cfm 6" you already have for your filter/exhaust-and put that on a fan speed controller too.

Make sure you have the duct from your air cooled hood going outside or into another room-not dumping into the same room as your tent.

Passive intakes are great for light leaks so it's best to go with an active intake. Intake/outtake need to be on speed controllers so you have control over your environment.

If they both aren't on speed controllers you will never be able to dial it in-your going to have so much negative pressure that your tent will collapse in on itself, or so much positive pressure your tent looks like a balloon.

Hope this helps.
 
Squidbilly

Squidbilly

Well-Known Member
No need for a dust shroom-they are pretty much just a shop vac hepa filter(actually more like a coffee filter)they charge you an arm and leg for. Just go with one of the 'bug shields' they sell, they work great at keeping dust and bugs out.
 
Squidbilly

Squidbilly

Well-Known Member
Just so you know, I have a 4" fan collecting dust because I went the passive intake route, then bought that for my active intake and it wasn't powerful enough to compete with my 400cfm 6" exhaust-even when I was running it through my filter and hood(before I got the other fan just for the light) I had my 4" running full blast and my 6" running at like 30-40%, so it was actually worse then having the passive intakes since I couldn't run my exhaust as fast as I wanted.
 
AttackOnDabs

AttackOnDabs

Member
Squidbilly said:
Just so you know, I have a 4" fan collecting dust because I went the passive intake route, then bought that for my active intake and it wasn't powerful enough to compete with my 400cfm 6" exhaust-even when I was running it through my filter and hood(before I got the other fan just for the light) I had my 4" running full blast and my 6" running at like 30-40%, so it was actually worse then having the passive intakes since I couldn't run my exhaust as fast as I wanted.
Click to expand...

So I should get another little booster fan pretty much 200 cfm and connect it just to my air cooled hood separately and then use the 6" (that i have connected to the filter and going through the hood and out the tent / set up in my pic) and just use it for just the carbon filter and out the tent. And I have a 'bug shield' so would I need another one for the intake so I don't suck in bugs and stuff in the tent.

Also I already have a variac transformer that I use for my 6" and carbon filter. Would I need another one for the intake?

Also using the 440 cfm with carbon filter that I have would be fine with another 6" 400cfm with a speed controller as the intake just dialing it in

Thanks again big help just want to make sure I'm getting this right and understanding it right
Helped me out a bunch and saving me money thanks much
 
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Squidbilly

Squidbilly

Well-Known Member
Yeah you need the intake on a speed contorller too. When you have that going on you'll have much more contorl over your environment. You should be able to get your temps close to your intake temps>meaning the temps of the air coming into your tent.

Try to avoid bends in your ducting, they really reduce cfms. Straight lines, taught ducting. You were loosing alot of cfms with what you had going on.
 
Hazydat620

Hazydat620

Well-Known Member
If you have the funds for a new fan, I would suggest spending that money on a 8 bulb T5. That 600 is way too much power for what you have going right now. Those seedlings don't need that much light and can do more harm than good. A T5 for veg in that tent will keep down the heat and you will most likely not need to run your inline fans, just a oscillating fan would do, and would keep the electric bill down for a couple of months. A T5 has more growing power than you think. same size tent as yours, good luck with the grow, those are Archive right? You picked a better breeder than I my first go around, that's for sure, your pretty much guaranteed some fire.
058.JPG
 
bird mcbride

bird mcbride

Well-Known Member
My first blower came from a real old volvo, but it had three speed selections:)
If my blowers screw up I keep a 2' piece of unchopped firewood handy on the doorstep so I can break the ice around the door to get in:)
I like to keep the grow-op pressure equal or just slightly greater than outside. For various reasons.
In my system intake/exhaust are controled by a thermostat with the exception of a very small fan that garantees positive air exchange.
I don't use cool tubes or sealed bonnets but ya, the blower for the sealed lighting should be relayed into the light timer, as well as any ossilating fans. Small unidiectional fan(s) should be left on 24/0.
In a veg or mother room the best choice is daylight tubes. A 150w MH comes in handy with the tubes.
 
Banana444

Banana444

Well-Known Member
Whats your ambient room temp outside the tent, sounds like you need to cool the air coming into the tent. I keep my ac at 76F or 77F. And have 450cfm 6" and two air cooled hoods 400w and a 600w in the same tent and my tent is only 1-2 degrees over my ambient room temp that the tent is in. Do you have magnetic or digital ballast. I have digis and they are outside the tent with a small fan blowing on them and are cool to the touch.
 
Banana444

Banana444

Well-Known Member
I have the same size tent too, 5x5x7 its yhe secret jardin ds150. Passive intake but may add a booster fan that would keep air moving under the screen, scrog grow.
 
AttackOnDabs

AttackOnDabs

Member
Hazydat620 said:
If you have the funds for a new fan, I would suggest spending that money on a 8 bulb T5. That 600 is way too much power for what you have going right now. Those seedlings don't need that much light and can do more harm than good. A T5 for veg in that tent will keep down the heat and you will most likely not need to run your inline fans, just a oscillating fan would do, and would keep the electric bill down for a couple of months. A T5 has more growing power than you think. same size tent as yours, good luck with the grow, those are Archive right? You picked a better breeder than I my first go around, that's for sure, your pretty much guaranteed some fire.
View attachment 3166788
Click to expand...
I was just looking at those yesterday the t5 lights which can come in handy for a couple months and I will have money to get another inline until then. I think that's my next move. And yes archive seeds only couple places you can get these I'm lucky will be getting more soon :)

My next question I guess is where do I go about using another inline in the pic this tent only has the top 6" for the exhaust. There is the about a couple inch hole on the side for wires to tie.
 
AttackOnDabs

AttackOnDabs

Member
I also would like to directly connect the inline to the filter but this combo was kind of loose. That's why I used the little bit of ducting to connect it. Can I tape them ducting tape? So I avoid losing CFM. I'm trying to straighten it out more.

Update: I got new 3 new power saving oscillating fans for the tent and has cooled tent a bit and has brought it down


I like the idea of a t5 for now would come in handy now and in the future until I can solve this temp prob and lower degrees until they flower in few weeks and I can get another inline or booster or both to have them separate. So booster 200cfm for light 600 watt dimmable so 50% 75% 100% I have a MH and HPS bulb now MH at lowest 50%

My only prob is I need it to be closed so the flaps are down this tent is in the garage and something my family goes in and turns on the light
It's importing it that it remains dark durning flowering and those flaps need to be closed

Also back to where can I connect these boosters and other intake fan when this tent only has 1 6" on top.

Does anyone use the "main-line" technique?

Thanks everyone for advice and input I really appreciate it
later I'll post more pics of tent and ladies.

I
 
jondamon

jondamon

Well-Known Member
First things first.

Before making any further purchases lets sort out some basics in your tent.

Ventilation basics.
Bends in duct work are BAD! Every 90 degree bend reduces your fans efficiency by 20%.

Try to put your ducting in as straight a line as possible with your fan.

What are the ambient temps of the area where your tent is? ie the ambient intake air temp?

Where are you dumping your hot air?

Ideally this should be an area that is nowhere near your tent.

Where is your ballast?
Depending upon brand they can generate heat too. Get it out of your tent if its inside.

Do all this and then test your temps.

Then make a judgement on whether you need anything extra.

Even if you get more equipment you should still take note of the above.



J
 
AttackOnDabs

AttackOnDabs

Member
Squidbilly said:
Yeah you need the intake on a speed contorller too. When you have that going on you'll have much more contorl over your environment. You should be able to get your temps close to your intake temps>meaning the temps of the air coming into your tent.

Try to avoid bends in your ducting, they really reduce cfms. Straight lines, taught ducting. You were loosing alot of cfms with what you had going on.
Click to expand...
Great I have an extra speed controller I can use for that.
Alright so straighten the lines as much as I can. Got it. Would it be helpful if I moved carbon filter to other side of tent to help with lines and turns?
So far hood is cool but suction doesn't feel that great from filter when my hand up against these plants going to be stinky
 

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AttackOnDabs

AttackOnDabs

Member
jondamon said:
First things first.

Before making any further purchases lets sort out some basics in your tent.

Ventilation basics.
Bends in duct work are BAD! Every 90 degree bend reduces your fans efficiency by 20%.

Try to put your ducting in as straight a line as possible with your fan.

What are the ambient temps of the area where your tent is? ie the ambient intake air temp?

Where are you dumping your hot air?

Ideally this should be an area that is nowhere near your tent.

Where is your ballast?
Depending upon brand they can generate heat too. Get it out of your tent if its inside.

Do all this and then test your temps.

Then make a judgement on whether you need anything extra.

Even if you get more equipment you should still take note of the above.



J
Click to expand...

Ok so my ballast is away from my tent ontop of a cabinet that I keep my supplies

Would moving my filter on other side help with the straighter lines?

My air is being vented where is hangs down infront of the 1 window in my garage where I open and a nice breeze comes in
 
Hazydat620

Hazydat620

Well-Known Member
AttackOnDabs said:
I was just looking at those yesterday the t5 lights which can come in handy for a couple months and I will have money to get another inline until then. I think that's my next move. And yes archive seeds only couple places you can get these I'm lucky will be getting more soon :)

My next question I guess is where do I go about using another inline in the pic this tent only has the top 6" for the exhaust. There is the about a couple inch hole on the side for wires to tie.
Click to expand...
I would drop that filter and set it on the floor in the corner right below the vent in the roof and straight pipe it out the top. Do you have vents on opposite sides directly across from each other? I would run a light in between those two vents and run your ducting from one side thru the light and out the other side. Make sure you fans are pulling fresh air across your hood, not pushing.
 
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