Hydro Help!!!

HydroRed

Well-Known Member
Untitled.png

Crude, but it conveys what I mean.
Before anyone says anything about the placement of the fan, I'll clear up exactly why I suggest this and practice this myself.
If your fan is first in line before the light hood, then you never have to worry about unfiltered smell escaping the room through miniscule gaps around the light/glass etc. Also, if the fan is last in the exhaust line it will get excessively warm and likely shorten the life of the fan/bearings.
 

stezzy

Active Member
View attachment 3763714

Crude, but it conveys what I mean.
Before anyone says anything about the placement of the fan, I'll clear up exactly why I suggest this and practice this myself.
If your fan is first in line before the light hood, then you never have to worry about unfiltered smell escaping the room through miniscule gaps around the light/glass etc. Also, if the fan is last in the exhaust line it will get excessively warm and likely shorten the life of the fan/bearings.


Awesome. .I've had this shit wrong all this time lol.......makes since now.....I wanna draw you a pic of my room...and your new set up applies to.mine. ..tell me if this is ok
 

HydroRed

Well-Known Member
Looks good, but I would suggest changing one thing. Bring your exhaust from low to up high and stay diagnal from the inlet that is low on the ground. This will create the best air exchange possible in a room and maximize temp control.
Screenshot_2016-08-22-15-13-03.jpg
 

stezzy

Active Member
View attachment 3763714

Crude, but it conveys what I mean.
Before anyone says anything about the placement of the fan, I'll clear up exactly why I suggest this and practice this myself.
If your fan is first in line before the light hood, then you never have to worry about unfiltered smell escaping the room through miniscule gaps around the light/glass etc. Also, if the fan is last in the exhaust line it will get excessively warm and likely shorten the life of the fan/bearings.

Hydro red, we'll I made a whole at the bottom of the drywall to go into other room. So you are telling me I need to cut another hole, but higher..is there anyway around this...or no
 

stezzy

Active Member
Its almost 2 years old and my wife who doesn't smoke made mention for the first time that she *thinks* she might have caught a whiff. Its worked well for me, but Im always open to better or less expensive. I must have 6-7 grows with it easily. It was one of the most expensive things I've had to buy for my rooms though :(


Also, with this new set up. Will it keep the inside of the tent at a decent temp..I have my account set to 65 which is really low, just to keep the temp under 84 with co2, if I move it to 68-70, the temp get up to 85-86. If I could afford to keep the account at 60 that be perfect but that's too low. So I'm wondering if this new right way will work out good, seems like it should. .so basically I'm dumping cold air into the room, and exhausting hot air out the tent, the ac air coming in is in the ceiling, but your saying with the bottom flaps open, the cold air should come in from the bottom as the heat is going out?
 

Vumar

Well-Known Member
Hydro red, we'll I made a whole at the bottom of the drywall to go into other room. So you are telling me I need to cut another hole, but higher..is there anyway around this...or no
Just patch the drywall and cut out the hole the same height (or average height) of the end of the light. Heat rises.... By trying to exhaust through your original bottom drywall hole will only build up heat inside the duct and slowly just "leak" back into your room. The duct heats up and radiates that heat back into the grow room. It's a moot point if you run a massive exhaust fan, but generally if you follow the rules of physics with some efficiency then growing becomes a lot easier and much less a chore. (@ttystikk for inspiration on how to maximize my grow potential/design. This guy runs one of the most impressive setups I've seen as far as efficiency and effectiveness).
 

Vumar

Well-Known Member
Passive air (cold) should be at the bottom. Exhausts should be located at the top, near the top, or parallel to your maximum height of the light (if you adjust light height during your grow.... Some people don't). This way all heat naturally disperses up and out easily and allows nothing but the (hopefully) cooler passive intakes to suck fresh clean air into your tent/room.
 

stezzy

Active Member
Passive air (cold) should be at the bottom. Exhausts should be located at the top, near the top, or parallel to your maximum height of the light (if you adjust light height during your grow.... Some people don't). This way all heat naturally disperses up and out easily and allows nothing but the (hopefully) cooler passive intakes to suck fresh clean air into your tent/room.


So basically what u saying is, if I have the exhaust at the top, the cold air will get bucked in from the bottom...seems legit...foreal foreal...I'm Def gonna try it..so with my tent zipped up with co2....is it fair to say 82-84 is a reasonable temp...because that co2 makes it get hotter..and I have 2 homaDE co2 generators going..plus the bucket joint I bought on amazon...
 

stezzy

Active Member
So basically what u saying is, if I have the exhaust at the top, the cold air will get bucked in from the bottom...seems legit...foreal foreal...I'm Def gonna try it..so with my tent zipped up with co2....is it fair to say 82-84 is a reasonable temp...because that co2 makes it get hotter..and I have 2 homaDE co2 generators going..plus the bucket joint I bought on amazon...


And also, the flaps at the bottom, they are on the sides and the back of tent..should I open all of them fully, ?
 

HydroRed

Well-Known Member
co2 does no good unless you are in a sealed room. As soon as your exhaust kicks on it sucks it all out within seconds. I'd quit with the co2 all together and let that and the new correct setup of your tent knock your temps down considerably. The temps you mention are very achieveable with your setup. As for having the drywall hole cut already, could you just run a flexi duct from up top on the outside of the tent exhaust down to the hole in the drywall? Then your exhaust is still up high in the tent where it needs to be and you can use the existing hole in the drywall. As for the inlets, Id use just the one opposite from the exhaust.
 

stezzy

Active Member
co2 does no good unless you are in a sealed room. As soon as your exhaust kicks on it sucks it all out within seconds. I'd quit with the co2 all together and let that and the new correct setup of your tent knock your temps down considerably. The temps you mention are very achieveable with your setup. As for having the drywall hole cut already, could you just run a flexi duct from up top on the outside of the tent exhaust down to the hole in the drywall? Then your exhaust is still up high in the tent where it needs to be and you can use the existing hole in the drywall. As for the inlets, Id use just the one opposite from the exhaust.


OK OK we are making progress lol...OK so basically I have a hole cut on the left side of the room at the bottom...so instead of cutting a hole at the top...just do the setup you showed me,but instead of having ducting run through the wall and out at the top, I can keep everything high, like exhaust fan and light and carbon filter ,so have the duct at the top run out of the tent at the top and go down and out the hole at the bottom, your saying that will still work ok?
 

stezzy

Active Member
You don't want to extract all the co2 you are generating for your room.


Dam....that's what I've been doing too..I mean I can tell the co2 is in the room because when I'm in there too long I feel a Lil light headed lol...but it makes more since to not exhaust it out...should I have all the flaps open at the bottom of the tent?
 

stezzy

Active Member
co2 does no good unless you are in a sealed room. As soon as your exhaust kicks on it sucks it all out within seconds. I'd quit with the co2 all together and let that and the new correct setup of your tent knock your temps down considerably. The temps you mention are very achieveable with your setup. As for having the drywall hole cut already, could you just run a flexi duct from up top on the outside of the tent exhaust down to the hole in the drywall? Then your exhaust is still up high in the tent where it needs to be and you can use the existing hole in the drywall. As for the inlets, Id use just the one opposite from the exhaust.

And also hydro red, the pic you drew for me has the exhaust fan on the right, which would mean I'd have to open the flaps on the left. But..the left is where the hole is in drywall where ducting will go out. Which means I if I have the exhaust fan the way you described, right between the light hood and carbon filter, then I don't understand how I can open the flap on the opposite side..the opposite side would be where the drywall hole is and the ducting going through it..I'd have to have the exhaust fan on the left to open flaps on right, but then that would be different then the pic you drew for me
 

HydroRed

Well-Known Member
My bad man, I was telling you the wrong side to keep your inlet. You want the inlet on the opposite side of where the filter is to force the cool air across the tent up and out.
Again, crude but this should help.
Screenshot_2016-08-22-15-13-03.jpg
 

stezzy

Active Member
My bad man, I was telling you the wrong side to keep your inlet. You want the inlet on the opposite side of where the filter is to force the cool air across the tent up and out.
Again, crude but this should help.
View attachment 3763784

A little confused, so I should move my inlet to the left lower side??? I see you drew the ducting at the top and going down and out, but still not sure where to put inlet
 

stezzy

Active Member
My bad man, I was telling you the wrong side to keep your inlet. You want the inlet on the opposite side of where the filter is to force the cool air across the tent up and out.
Again, crude but this should help.
View attachment 3763784


So even though the ducting is going out on the left side, since the in kerb is at the top righy, I can still have the flaps open on the left??
 

HydroRed

Well-Known Member
Your making this more difficult than it needs to be haha. Just let the ac cool the room that the tent is in. Dont duct any ac into the tent. When the exhaust runs, it will pull the heat from the light and the tent through the filter and the cool air from the room will naturally get pulled into the tent through the inlet on the opposite side of the filter. If your filter is up top on the right, you need your inlet on the bottom left. Hope this helps clarify what I mean.
 
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