Design upgrade. please look at my diagram

NorthofEngland said:

Hi Safari420
Where is the carbon filter/scrubber on your diagram?
(And it's an OK diagram - it serves its purpose, which is all that matters).

I agree that an intake fan in unnecessary.
The negative air pressure created by the extraction fan will cause an adequate passive air intake.

If you run more than one cool tube/ventilated hood it is often better to have a separate, smaller fan just to serve the reflectors
and another fan for the odour filter and air exchange issues.

Using a RvK315A1L1 to cool three hoods and power a 12" Filter can be problematic.

Each new connection and bend decreases efficiency of the system.

Far better to divide the tasks between 2 smaller fans.

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That's really good info. thanks for taking the time. Carbon Filter is my next purchase, i live in a house upper level bathroom and its vented out top of the house. noone around me for a km. I have 1 question if you look at this diagram that another user posted above. in this diagram the fan is blowing air through to the bulb and out. as of now there is a fan in the wall, a reg bathroom fan, should i keep that there and create a bracket to connect the ducting to it like this diagram and put another fan like the diagram? 1 fan in the wall and 1 at the start of the ducting or take the fan in the wall out?

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safari420 said:

That's really good info. thanks for taking the time. I have 1 question if you look at this diagram that another user posted above. in this diagram the fan is blowing air through to the bulb and out. as of now there is a fan in the wall, a reg bathroom fan, should i keep that there and create a bracket to connect the ducting to it like this diagram and put another fan like the diagram? 1 fan in the wall and 1 at the start of the ducting or take the fan in the wall out?

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That pic is *exactly* how I run my flower tent, and it works very well.

6" filter -> 6" 440cfm inline -> cooltube -> exhaust out the top of my tent, high up... with passive cool air intake at the floor.

-spek

ps. as far as taking fans out, my recommendation would be to test it. All you need is slight negative pressure. If you can sense/feel that, you're ok. If you don't, add an extra fan into the mix.

spek9 said:

That pic is *exactly* how I run my flower tent, and it works very well.

6" filter -> 6" 440cfm inline -> cooltube -> exhaust out the top of my tent, high up... with passive cool air intake at the floor.

-spek

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perfect. that's egsactly how ill do it, but you think i should leave the fan in the wall out or leave it in. i changed it last year for a better one.

safari420 said:

perfect. that's how ill do it, but you think i should leave the fan in the wall out or leave it in. i changed it last year for a better one.

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I put a PS edit on my last post. See if that answers your question. If not, let us know.

-spek

Thank you for that. it did answer my question. looking at my Fan specs the one in the wall is 100cfm and the other i have is 50cfm. ill test it and see and start looking for a much better fan

if you're renting and want an intake fan, go out and buy a cheap door from the rebuild center, cut a hole in it, and stick a small fan in there.

safari420 said:

That's really good info. thanks for taking the time. Carbon Filter is my next purchase, i live in a house upper level bathroom and its vented out top of the house. noone around me for a km. I have 1 question if you look at this diagram that another user posted above. in this diagram the fan is blowing air through to the bulb and out. as of now there is a fan in the wall, a reg bathroom fan, should i keep that there and create a bracket to connect the ducting to it like this diagram and put another fan like the diagram? 1 fan in the wall and 1 at the start of the ducting or take the fan in the wall out?

View attachment 2932551

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I agree with Spek.

Use what you have already - I would be silly not to, really.

Even if the bathroom fan already in place doesn't work particularly well, utilise the ducting and vents that are already sat there just waiting to be used.

I wish I had something like that, instead of lengths of aluminium ducting snaking across the floor (passive intake) and around the upper wall (extraction vent).


The warm air that comes from my 1000w AeroWing combo warms the entire upstairs of the house.
I hardly ever use the central heating.

My system is:
Air out -
6" Rhino carb filter - 6" Ducting - enclosed reflector - 6" Ducting (out of tent) - 6"RUCK E1A1 - 6" Ducting (ending at window)

Air in -
A 4ft length of 6" ducting starts about 3 ft from tent (on floor) enters tent and stops between the 1st and 2nd row of pots.
There are 3 rows of 3 but, if I made the ducting go any further central, the intake would be directly under the hood - and it would probably warm it more than is the case now,,,,?

Quote from SAFARI420:
"Carbon Filter is my next purchase, i live in a house upper level bathroom and its vented out top of the house. noone around me for a km."

Firstly - The smell from just a single plant can cause ALL KINDS OF PROBLEMS so, do yourself a favour and stick to 'Carbon Filter is my NEXT purchase.....'
Don't allow yourself to be too confident and keep putting it off. A decent filter is worth it's value TIMES TEN.

Secondly - Using the next size up of filter to the fan ( 8" Filter with a 6" fan, 10" with a 8" fan.....) has been recommended to me.
Apparently it prolongs the life of the filter and increases overall efficiency.

At the moment I have a 4 x 4 tent wiih 1000w ventilated hood
and a 8 x 4 with 3 x 600w open reflectors - I use 8"RvKE1A1 and 8"FRESH Filter - OK for cold months
But, by March, I want 3 closed hoods, ventilated with a separate 8"Fan
and a 8" fan/filter for air exchange and odour.

I bought a 12"RvKe1A1 because it was stupidly cheap BUT it's too big to really use.
I was going to convert an entire room 3m (9ft 11in) x 2m (6ft 7in) x 2.7m (8ft 11in) high
but I changed my mind and got an 8 x 4 x 6 tent.

Now I think I will use a 12" to 8" reducer and attach the 12"rVk to an 8" filter and use a fan speed controller to calm it down....

Don't vent dirrectly outside if you live in an area where it snows. The heat from the exhaust will cause glacier formations where the exhaust exits, leaving a clear sign that you are growing something inside. I was watching a show called "Alaska State Troopers" and the DEA used the ice formation for probable cause. Judging by your choice of KM instead of miles, Im guessing you dont live in the US but still your country knows this and could use it to get you. Better safe than sorry. Ill upload a picture from the episode later when i get back

I like it, can you have the intake fan/ducting straighter and shorter? Hook it up to the wall to the right side, would be more efficient that way. The less bends the better

sdf said:

Don't vent dirrectly outside if you live in an area where it snows. The heat from the exhaust will cause glacier formations where the exhaust exits, leaving a clear sign that you are growing something inside. I was watching a show called "Alaska State Troopers" and the DEA used the ice formation for probable cause. Judging by your choice of KM instead of miles, Im guessing you dont live in the US but still your country knows this and could use it to get you. Better safe than sorry. Ill upload a picture from the episode later when i get back

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They sometimes use thermal imaging from helicopters to look for larger scale vents - another reason to avoid venting through a bedroom window.
If you live in a cold climate, like myself, make the most of the heat - vent it into the home and enjoy the warmth.
Man and plants coexisting in perfect harmony....

the thermal imaging isnt just for venting outside, they use it to see the hotspots in your room. You can use a special type of insulation to eliminate their ability to see it from the helicopter. Gorilla tents have this insulation built into the tents

Did someone say Thermal Imaging!!!!

butchyboy said:

did someone say thermal imaging!!!!

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ugh...caca!! Busted!!

well shitt.....