Budley Doright
Well-Known Member
What PPM levels were you running? Just curious, I've dabbled in it but haven't hooked up my controller, just to much shit involved for me right now
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co2 with portable ac
- Thread starter rastaweed
- Start date
.Just my opinion, but I feel like new growers overrate CO2 to the leaves and underrate O2 to the roots.
Growing in soil and supplementing CO2 doesn't make a whole lot of sense. You want to increase all the facets of a plants metabolism equally and choking your roots in soil is more of a bottleneck than 500ppm CO2.
Also increasing metabolic activity with light, heat, CO2 will lead to nutrient deficiencies, not necessarily in the nutrient solution itself, but in the plants sheer ability to take them up at a rate to keep up with its photosynthesis. Typically non-mobile elements like Ca, which can affect fruit ripening and flavor which is why CO2 and temps are generally dropped during at least the latter part of flower.
Growing in soil and supplementing CO2 doesn't make a whole lot of sense. You want to increase all the facets of a plants metabolism equally and choking your roots in soil is more of a bottleneck than 500ppm CO2.
Also increasing metabolic activity with light, heat, CO2 will lead to nutrient deficiencies, not necessarily in the nutrient solution itself, but in the plants sheer ability to take them up at a rate to keep up with its photosynthesis. Typically non-mobile elements like Ca, which can affect fruit ripening and flavor which is why CO2 and temps are generally dropped during at least the latter part of flower.
Budley Doright
Well-Known Member
I think for a hobby grower CO2 has its place if you for some reason need to run a sealed or semi sealed room and have an over abundance of O2. I was going to run it as oppsed to using an intake in extreme cold and running heat to offset that. Presently I only bring intake on when temps get high.
Odin*
Well-Known Member
CO2 is heavier than 02. Raise the intake port.
A dual port will not solve the issue. There is still the intake on the back, where the filter is. I haven't seen a dual port unit that did not also draw in from the back (filter). When I get a chance, I'll message you the solution.
I have a "newbie warning" to give you. The plastic "flow gauge" on the CO2 regulator will degrade over time, 5-8 years has been my experience. It will eventually spring a leak, dumping the contents of the bottle into the room. A near empty tank isn't a big deal. A near full tank can kill you. Be mindful and you should be familiar with the effects of exposure to high CO2 concentrations.
A dual port will not solve the issue. There is still the intake on the back, where the filter is. I haven't seen a dual port unit that did not also draw in from the back (filter). When I get a chance, I'll message you the solution.
I have a "newbie warning" to give you. The plastic "flow gauge" on the CO2 regulator will degrade over time, 5-8 years has been my experience. It will eventually spring a leak, dumping the contents of the bottle into the room. A near empty tank isn't a big deal. A near full tank can kill you. Be mindful and you should be familiar with the effects of exposure to high CO2 concentrations.
Budley Doright
Well-Known Member
The air that is drawn in is the return air from the room? It will not effect the pressure in the room, same in as blown out, again in the room.
Odin*
Well-Known Member
There is a filter on the back of the unit for a reason, that's where it draws in from, regardless of whether or not there is a second port as an intake. It will create negative pressure, but that doesn't matter. The fact that it is drawing in from the back means that it is sucking up your CO2 and is blowing it out of the exhaust along with with heat.
^ I think what he means is that most 2 hose systems are not hermetically sealed, so will still exhaust a small amount of room air. Not near as much as a one hose system, but some.
I have seen threads where people go inside window shaker AC's and modify them with bits of foil tape and foam board so they are air tight sealed front to back for no air exchange, but I can't say I've ever seen it done to a portable AC.
I have seen threads where people go inside window shaker AC's and modify them with bits of foil tape and foam board so they are air tight sealed front to back for no air exchange, but I can't say I've ever seen it done to a portable AC.
Budley Doright
Well-Known Member
No they don't. The whole purpose of a dual port is so it does not effect the pressure .... Google it! If you find anything that states otherwise please post the link so I won't be misinforming people
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Odin*
Well-Known Member
I don't have to "Google" shit. Run a dual port and tell me that you *never* have to clean the filter in the back of the unit. I have run 5 different (manufacturers) dual port units. Each, regardless of claims, have created negative pressure, sucked CO2, and required frequent cleaning of the filter on the back of the unit. The most expensive unit is a $900 Soleus (the "tank", in operation 24/7 for ~10 years), and a couple other units (2 of each) that have needed replacement. ALL have created negative pressure, all have required cleaning of the rear filter, and all have sucked CO2 from the room like crazy. The room in question would go through a 20lb tank in 3 days. Completely sealed, no ducting for the lights (4). Same tank (20lb), room with 3x as many lights (12), cooled by a Goodman 5 ton, lasts ~14-17 days. That's set to 1800ppm (calibrated each run).
The room in question was reverted to a veg room for this reason, 7 years ago. Still cooled by that 2 port Soleus. It is so well sealed that the door "whistles" when closed. Newer units have failed, the "tank" has taken their place (previously retired from elsewhere, called back to duty).
Run your 2 port for a year without checking it, take a look at the rear filter, then chime in.
Smug, please don't.
The room in question was reverted to a veg room for this reason, 7 years ago. Still cooled by that 2 port Soleus. It is so well sealed that the door "whistles" when closed. Newer units have failed, the "tank" has taken their place (previously retired from elsewhere, called back to duty).
Run your 2 port for a year without checking it, take a look at the rear filter, then chime in.
Smug, please don't.
Budley Doright
Well-Known Member
Ok then
. But is that the only filter your cleaning, if yes then it's the return air filter and not the condenser air intake. I seem to have touched a nerve lol. Just trying to clarify is all but really if yours creates a negative air then that sucks lol.
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Budley Doright
Well-Known Member
Actually just had a look, googles my friend . And yup oteymut is probably right, duct tape may have solved your issue if it was sucking air from inside, that means your unit was leaking.
. And yup oteymut is probably right, duct tape may have solved your issue if it was sucking air from inside, that means your unit was leaking.
Odin*
Well-Known Member
Ok then
Google is not the answer to everything.
Internet search does not supersede empirical. Your "tent experience" has clouded your mind . Run a bloom room with your dual port, then replace it with a mini split/5 ton. Report back with 20lb tank duration for each. Even then, at this point, I would doubt the "credibility" of your findings. Not because I believe you to be dubious, but your general knowledge/experience appears to be lacking.
This isn't just my own experience, but that of every grower I have ever known that tried to use a portable in a bloom room. Low wattage, a light or two, it may not be as noticeable. Less heat generated, less operation, less CO2 "extraction". However, it will still be "stealing" CO2.
Whether you are open to the facts, or not, portables, single and dual port, suck CO2 from the room.
Budley Doright
Well-Known Member
Ok then, sorry to agitate you
Google is not the answer to everything.
Internet search does not supersede empirical. Your "tent experience" has clouded your mind . Run a bloom room with your dual port, then replace it with a mini split/5 ton. Report back with 20lb tank duration for each. Even then, at this point, I would doubt the "credibility" of your findings. Not because I believe you to be dubious, but your general knowledge/experience appears to be lacking.
This isn't just my own experience, but that of every grower I have ever known that tried to use a portable in a bloom room. Low wattage, a light or two, it may not be as noticeable. Less heat generated, less operation, less CO2 "extraction". However, it will still be "stealing" CO2.
Whether you are open to the facts, or not, portables, single and dual port, suck CO2 from the room.
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Odin*
Well-Known Member
Hey, no disrespect. It is what it is. 
No thread jacking intended, but what are you currently running @Budley Doright?
Avatar? Fishing boat? You on a lake? Envious, ain't gonna lie.
No thread jacking intended, but what are you currently running @Budley Doright?
Avatar? Fishing boat? You on a lake? Envious, ain't gonna lie.
DemonTrich
Well-Known Member
A dual hose WILL in fact draw out air from a sealed room if placed in the room. My floors and wall material sucking in was proof. Albeit a minute ammount, it still create a neg pressure scenario
SoOLED
Well-Known Member
need to be a dual hose system
http://www.ideal-air.com/products/Portable-Air-Conditioners.aspx
like this: there are a lot from many companies: but from some reason this one is used a lot in grow rooms, I think its because its connects are silicone covered for humidity...but I dunno.
http://www.ideal-air.com/products/Portable-Air-Conditioners.aspx
like this: there are a lot from many companies: but from some reason this one is used a lot in grow rooms, I think its because its connects are silicone covered for humidity...but I dunno.
DemonTrich
Well-Known Member
Stay away from active air 14k dual hose ac. Utter GARBAGE! !!!!!!! My single hose lg 14k blows the active air like it's an 8k unit.
Odin*
Well-Known Member
Soleus products of late have been sub par also (portable's compressors failing and humidistat and pump failures in the 70 pint dehu).
Regarding the "negative pressure". Negative pressure in the room does not = CO2 leaching. The intake can be drawing in the exact amount of air that is being exhausted, equal pressure, but if the exhaust is drawing from inside the room (which it is) it is taking in your CO2 and dumping it. You can have positive pressure (greater intake than exhaust), but still have CO2 depletion. These units are basically circulating outside air in and inside "air" out. Let's not forget that these are not built with your CO2 filled grow room in mind.
Regarding the "negative pressure". Negative pressure in the room does not = CO2 leaching. The intake can be drawing in the exact amount of air that is being exhausted, equal pressure, but if the exhaust is drawing from inside the room (which it is) it is taking in your CO2 and dumping it. You can have positive pressure (greater intake than exhaust), but still have CO2 depletion. These units are basically circulating outside air in and inside "air" out. Let's not forget that these are not built with your CO2 filled grow room in mind.
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