Transpiration.. it's more than you think.

I just did a calculation on my condensation output from my AC and Dehuyes. I pulled 220ml in 60 seconds. That's 86.3 gallons a day! Which is about the amount I feed every day. I was thinking more like half of that, but.... "The more you Know"... Yeah, Im bored today.

yes, all the water you put into the dirt goes somewhere. most of it into the air. one gallon of water weighs a little over 8 pounds, so if you consider 90% of a plant's mass to be water, even a larger sized plant has less than a gallon of water inside of it at any one moment

I dump about 4 gallons per day from my dehumidifier in a 400 sq ft room with a 4x4 tent and a 2x2....and a turtle tank LOL. It is truly amazing how much water we pull from the air...

DoubleAtotheRON said:

I just did a calculation on my condensation output from my AC and Dehuyes. I pulled 220ml in 60 seconds. That's 86.3 gallons a day! Which is about the amount I feed every day. I was thinking more like half of that, but.... "The more you Know"... Yeah, Im bored today.

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Now the question is how much is not need and how do I get more efficient. Apologies for the curve. But a friendly hello was the intent to begin. LOL.

I suppose my intent on measuring this was to see if it would be more efficient to add another 3 ton mini split to save energy. My current new 3 ton will dump about 350 ml to my 3 dehuyes at 310 ml. BUT! the 3 dehuyes are pumping 122 degrees each into the room. My AC pulls about 23 amps, and the combined 3 dehuyes pull about 22 amps.... so yeah, I found my answer. Another advantage would be that the 2, 3 ton units wouldn't have to work as hard. Im pulling ~95 amps on my panel which is 200amp... so I got room. Especially if this works, and I can delete the 3 stand alone dehuyes.

DoubleAtotheRON said:

I suppose my intent on measuring this was to see if it would be more efficient to add another 3 ton mini split to save energy. My current new 3 ton will dump about 350 ml to my 3 dehuyes at 310 ml. BUT! the 3 dehuyes are pumping 122 degrees each into the room. My AC pulls about 23 amps, and the combined 3 dehuyes pull about 22 amps.... so yeah, I found my answer. Another advantage would be that the 2, 3 ton units wouldn't have to work as hard. Im pulling ~95 amps on my panel which is 200amp... so I got room. Especially if this works, and I can delete the 3 stand alone dehuyes.

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I'm just poor folk. And my lawn costs me $300 a month with household costs. Always pinching something. Glad utilities are in your name.

DoubleAtotheRON said:

I suppose my intent on measuring this was to see if it would be more efficient to add another 3 ton mini split to save energy. My current new 3 ton will dump about 350 ml to my 3 dehuyes at 310 ml. BUT! the 3 dehuyes are pumping 122 degrees each into the room. My AC pulls about 23 amps, and the combined 3 dehuyes pull about 22 amps.... so yeah, I found my answer. Another advantage would be that the 2, 3 ton units wouldn't have to work as hard. Im pulling ~95 amps on my panel which is 200amp... so I got room. Especially if this works, and I can delete the 3 stand alone dehuyes.

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Help me figure out what your trying to do? If I’m reading right(pretty fucking stoned atm) it looks like you think adding a 3 ton unit will help you with dehumidification. But I don’t believe this to be the case unless you run one on heat and one on cool.
Running on dehuey mode cools the room, cool rooms are hard to dehumidify. Running AC regularly and adding a second unit to your room will take some of the load off the other unit, but that means it will actually be pulling less water out of the air than if it was running full blast all the time. The combined amount of the two ac might be a bit more water than the one pulls now but I can’t see it being that much more because the same amount of cooling is being done just split into two units.

that being said the price of a quest dehuey is not that much more than a mini split and they are way more efficient at dehumidification.

DoubleAtotheRON said:

I just did a calculation on my condensation output from my AC and Dehuyes. I pulled 220ml in 60 seconds. That's 86.3 gallons a day! Which is about the amount I feed every day. I was thinking more like half of that, but.... "The more you Know"... Yeah, Im bored today.

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The only other thing that might work if your on a climate that requires much cooling during lights off then you can look at the quest cool units they set condenser outside like a mini split, but if you have harsh winters at all I’d get a regular quest. I don’t have much heat load during lights out so I need regular dehumidifiers. I am shopping for quest units now these stand alone units eat way to many amps.

Edit:hell I just had to run a new circuit mid run, because I needed a 4TH 70 pint to keep up. I’m hoping to get the quest units ASAP.

Apalchen said:

The only other thing that might work if your on a climate that requires much cooling during lights off then you can look at the quest cool units they set condenser outside like a mini split, but if you have harsh winters at all I’d get a regular quest. I don’t have much heat load during lights out so I need regular dehumidifiers. I am shopping for quest units now these stand alone units eat way to many amps.

Edit:hell I just had to run a new circuit mid run, because I needed a 4TH 70 pint to keep up. I’m hoping to get the quest units ASAP.

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I DO need more cooling power. I'd like to be able to bring my daytime highs into the 70's towards the end, and I can't do that with one 3 ton unit, while 3 dehuyes are running. The new Carrier units (like I just got) are dehumidification monsters!.. I do not need any heat during the night, as Im in a very highly sealed room. I have to turn the AC unit to "dry" mode at night, and even then, it can get too cold. In "Dry" mode, I have to set the temp to 83 to get a low of 74 during lights off... and it's not blowing heat, its cool air. I would really only need the 2nd unit during lights on, and only during flower. During flower, I would need the second unit to help cool the room and dehumidify during lights on. I'd prob shut the second one down during lights out. My brother is a HVAC guy and I can get a 3 ton carrier cheaper than a Quest, and I think it would be more useful during flower.... just thinking this out here. If my 3 ton can pull more water vapor than my 3 stand alone dehuyes, and not push a combined 360 degrees of heat in there, to me, it makes sense.... and if im wrong, please give me some input. And like now, in week 6.. I'd prob set one unit to cool, and the other to dry mode. IDK, I'd have to experiment with it.

I wish renfro was still around I could just tag him and when he said it wasn’t a good idea you would believe him. Lol.

don’t drop the loot on that 3 ton just yet I’m trying to figure out a way to explain why it won’t work like you think.

the only reason your ac is pulling any water at all during lights off is the little bit of heat load from outside(min since well insulted) and from fighting the heat your dehuey make.

AC have to be actively cooling to remove moisture, once air gets colder it’s hard to remove as much moisture(just look at dehuey rating at diff temps). If you don’t have something heating that air back up so the air conditioner will cool it back down (like during lights on) then it won’t pull enough moisture.

not saying don’t get another mini split if you need more cooling, what I am saying is that I doubt you need a 3 ton. And I’d bet any amount of money you wanted that those 2 units are not gonna take care of the humidity alone(unless you run one in heat mode and even then i don’t think so).

not sure how to convince you I know what I’m talking about but here is a pic so you can see I’m not a tent grower throwing out advice with no clue.

I too need more cooling, but I’m buying the quest first, cause I can finish at low 80s or dim my lights to get where I’d want the last two weeks. Also the quest are so much more efficient that I’d say some of my heat load will be removed from the room after switching because these 4 stand alone put off some heat.

Humidity is so important. Especially if you have to pass testing, that id buy the right tool for the job and know my humidity is where it’s supposed to be at at all times. Instead of constantly adjusting two mini splits to try and and get them to do a secondary job they just aren’t that good at. ( yea you measured a ton of water from the ac, but next time try it at lights off only, and compare that to your dehuey at lights off only, and even then your ac is fighting the heat load from the dehuey, remove those and it will pull even less during lights off with no heat to fight at all)

Cool.. Im gong to try that tonight and see how much all the units are pulling during lights out.... and Im not saying you're wrong, or anything. Im just trying to find the best and efficient solution to control the environment. I don't even have a problem until the last 4 weeks, then I'd like more control over the temps/RH. I tried to get a straight answer from a Quest dealer here local, but he had no clue as to the heat output of the unit.

Apalchen said:

I too need more cooling, but I’m buying the quest first, cause I can finish at low 80s or dim my lights to get where I’d want the last two weeks. Also the quest are so much more efficient that I’d say some of my heat load will be removed from the room after switching because these 4 stand alone put off some heat.

Humidity is so important. Especially if you have to pass testing, that id buy the right tool for the job and know my humidity is where it’s supposed to be at at all times. Instead of constantly adjusting two mini splits to try and and get them to do a secondary job they just aren’t that good at. ( yea you measured a ton of water from the ac, but next time try it at lights off only, and compare that to your dehuey at lights off only, and even then your ac is fighting the heat load from the dehuey, remove those and it will pull even less during lights off with no heat to fight at all)

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Humidity is important... agreed. We do have an H203 generator (AirROS) that should be able to let us run VPD to the end without any problems (last run was zero microbes detected).. However, my main problem is cooling power. I can't run my lights at 100% without overheating the room, even tho we are sealed and running CO2 when the room starts getting a good amount of biomass going. In week 6, I have to dim the lights slightly to gain 86 for a high at the end of the light cycle. I'd like to be able to get that down into the mid 70's towards the last 3 weeks, so lets take RH off the table for a min....... now what you think?

Apalchen said:

I wish renfro was still around I could just tag him and when he said it wasn’t a good idea you would believe him. Lol.

don’t drop the loot on that 3 ton just yet I’m trying to figure out a way to explain why it won’t work like you think.

the only reason your ac is pulling any water at all during lights off is the little bit of heat load from outside(min since well insulted) and from fighting the heat your dehuey make.

AC have to be actively cooling to remove moisture, once air gets colder it’s hard to remove as much moisture(just look at dehuey rating at diff temps). If you don’t have something heating that air back up so the air conditioner will cool it back down (like during lights on) then it won’t pull enough moisture.

not saying don’t get another mini split if you need more cooling, what I am saying is that I doubt you need a 3 ton. And I’d bet any amount of money you wanted that those 2 units are not gonna take care of the humidity alone(unless you run one in heat mode and even then i don’t think so).

not sure how to convince you I know what I’m talking about but here is a pic so you can see I’m not a tent grower throwing out advice with no clue.
View attachment 4887210

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What did happen to renfro?

DarkWeb said:

What did happen to renfro?

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Left on his own terms.

Apalchen said:

I too need more cooling, but I’m buying the quest first, cause I can finish at low 80s or dim my lights to get where I’d want the last two weeks. Also the quest are so much more efficient that I’d say some of my heat load will be removed from the room after switching because these 4 stand alone put off some heat.

Humidity is so important. Especially if you have to pass testing, that id buy the right tool for the job and know my humidity is where it’s supposed to be at at all times. Instead of constantly adjusting two mini splits to try and and get them to do a secondary job they just aren’t that good at. ( yea you measured a ton of water from the ac, but next time try it at lights off only, and compare that to your dehuey at lights off only, and even then your ac is fighting the heat load from the dehuey, remove those and it will pull even less during lights off with no heat to fight at all)

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Hows your bud quality running low 80s under DE HPS til the end? I know most people who gradually drop in the last 2 weeks as they come to a close.

When I ran DE HPS anytime I went over 80 the product came out hairy with alot of brown hairs. Yield was good though cause they eat up more co2 as its hotter and bulk up. Couldve been my nutes too though. I was messing around with what I felt like was imbalanced nutrients back then

Im in w6 rn under my 650w leds and still running ~83F. I feel like the sparkle isnt as much as it could be.... still no color either yet. Only my 2nd time running these sundae drivers though. Kinda scared to run it at these temps til the end but going to try and see what happens.