dehu...

this question never seems to get answered so im gonna ask as simple and basic as i can

which of these 3 dehumidifiers do i need for a 225 sq foot flower room




Thanks!

Gwhiliker said:

this question never seems to get answered so im gonna ask as simple and basic as i can

which of these 3 dehumidifiers do i need for a 225 sq foot flower room

Quest HI-E Dry 195 - Factory Remanufactured - 3 Year Warranty

These are Quest remanufactured (refurbished) units, not new units. These Quest units were remanufactured directly at the Quest factory, and get a 3 year warranty directly from the Quest brand. Many of the issues tended to be minor or cosmetic. Get the flexibility in dehumidification you need in...

growershouse.com

Quest Dual 110 Overhead Dehumidifier direct from Growers House

These are Quest remanufactured (refurbished) units, not new units. These Quest units were remanufactured directly at the Quest factory, and get a 3 year warranty directly from the Quest brand. Many of the issues tended to be minor or cosmetic. Quest Dual 110 was designed to be placed overhead...

growershouse.com

Quest Dual 205 Overhead Dehumidifier

The #1 gardening source. With over 20,000 products and expertise knowledge , we will surely be able to satisfy all your growing needs.

www.tillandroot.com

Thanks!

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I think any of the 3 will work. Placement is key.

It's impossible for someone else to answer based on information provided.

Basically if the room is sealed you need to remove as much water as your putting into it.

Say your watering 30 gallons a day, you need to be able to remove 30 gallons of water a day.

I have a 12x24 room and I'm thinking I'll want the 225 pint. Right now I'm getting by with 120 pints (a 50 and 70 pint) but I want full control and plan on adding more lights which means plants will drink more.

For someone to venture a guess you need to list how many lights and what type. Your medium and size of pots. How much of the room will be canopy. What your cooling system is. Wether your run bottled c02 or a burner. How many plants your running. Is your res in the room. What happens to your run off.

There are all sorts of reasons it's hard to get an answer on what size dehuey you need.

The best way to know is see how much water your plants use and size accordingly, but if your just setting up a room that's hard to know and we can try to guess with the above information.

so ill be running promix BX in 5 gallon fabric bag when i move into the flower room, only 180-200 sq foot will be used for plants the rest willl be for movement and such i will be running 2 wall mounted 18000 btu ac units, res will be outside of the room, lighting will be 5040 watts of cmh and 3250 watts of led. i may switch some cmh with hps later on down the line but want to do some testing with them first. run off will be drained out of the room into another res. no co2 i planed on running around 72 plants on a 4 week veg in a perpetual cycle (i can seal off a section of the room for the last few weeks of flower to have it less humid if need be) i think this covers everything

Gwhiliker said:

so ill be running promix BX in 5 gallon fabric bag when i move into the flower room, only 180-200 sq foot will be used for plants the rest willl be for movement and such i will be running 2 wall mounted 18000 btu ac units, res will be outside of the room, lighting will be 5040 watts of cmh and 3250 watts of led. i may switch some cmh with hps later on down the line but want to do some testing with them first. run off will be drained out of the room into another res. no co2 i planed on running around 72 plants on a 4 week veg in a perpetual cycle (i can seal off a section of the room for the last few weeks of flower to have it less humid if need be) i think this covers everything

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You need to think seriously about about adding c02 when you can, for the mean time your gonna need to pull fresh air in with a timer, depending on your outdoor humidity this can hurt or help you or on some days do both as far a humidity is concerned.

72 five gallon pots is gonna be a lot of water. Out of the ones you linked I'd def go with the 205. But if it was me I might go even bigger.

Are your mini splits hooked to the same condensor or completely separate. If they are seperate you can set one to dry mode and have the other producing some heat during lights off and it will help with humidity during the dark period.

Apalchen said:

You need to think seriously about about adding c02 when you can, for the mean time your gonna need to pull fresh air in with a timer, depending on your outdoor humidity this can hurt or help you or on some days do both as far a humidity is concerned.

72 five gallon pots is gonna be a lot of water. Out of the ones you linked I'd def go with the 205. But if it was me I might go even bigger.

Are your mini splits hooked to the same condensor or completely separate. If they are seperate you can set one to dry mode and have the other producing some heat during lights off and it will help with humidity during the dark period.

Click to expand...

no minisplits, i live in a dry 20-50% rh cold climate it doesnt really get above 80 and half the year is winter so ill just be running a couple window/wall mounted 18000 but on a temp controller until i can afford the to add mini splits, co2 and all the other jazz. i think i'll go with the 205 for now thanks for your input!

Your outdoor environment will have little bearing on your indoor growroom.
I have a 300sqft room that i run 36 plants in 7gallon smart pots. I run 12 gavitas, previously 18 600w hps.
To keep the humidity below 60% and the room cool i run a 3 ton mini, a 1 ton window shaker, and 3 dehumidifiers, not sure of the size but around 70pints.
You likely wont be able to keep that room cool with 3 tons of a/c....your running 8300 watts, each watt is 3.4btu of heat so you are around 30000btu, just below 3 tons of cooling. Add in pumps, fans, dehumidifiers etc, plus the heat load of the room if it was empty, which is around 5000btu, and u wont be able to do it.
My room is 7200watts and i need 4 tons, though i do run a CO2 burner.

do you think i could get away with 3 15000 btu units?

or 2 25000 btu units would be cheaper and easier to mount

im going to upgrade all this stuff as soon as im able im also willing to shut off a couple of the lights if i have to

Gwhiliker said:

this question never seems to get answered so im gonna ask as simple and basic as i can

which of these 3 dehumidifiers do i need for a 225 sq foot flower room

Quest HI-E Dry 195 - Factory Remanufactured - 3 Year Warranty

These are Quest remanufactured (refurbished) units, not new units. These Quest units were remanufactured directly at the Quest factory, and get a 3 year warranty directly from the Quest brand. Many of the issues tended to be minor or cosmetic. Get the flexibility in dehumidification you need in...

growershouse.com

Quest Dual 110 Overhead Dehumidifier direct from Growers House

These are Quest remanufactured (refurbished) units, not new units. These Quest units were remanufactured directly at the Quest factory, and get a 3 year warranty directly from the Quest brand. Many of the issues tended to be minor or cosmetic. Quest Dual 110 was designed to be placed overhead...

growershouse.com

Quest Dual 205 Overhead Dehumidifier

The #1 gardening source. With over 20,000 products and expertise knowledge , we will surely be able to satisfy all your growing needs.

www.tillandroot.com

Thanks!

Click to expand...

Plants release about 70% of watered amount per day so a general estimate is about a half gallon per day per plant. Of course temps and airflow are just as important make sure its breezy in there plus a good air purifier would be a good idea. This is a rough estimate but id go overboard because once you get mold it cost you more than the equipment to prevent it.

With a dehu it's more about cubic feet and not square feet.

I run their dual 205 in a 5000 cuft flowering room and I wouldn't want a smaller one, we also have low ambient here so if in a humid region you may need more.

Renfro said:

With a dehu it's more about cubic feet and not square feet.

I run their dual 205 in a 5000 cuft flowering room and I wouldn't want a smaller one, we also have low ambient here so if in a humid region you may need more.

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i spoke with a rep today and he suggested i go with a 110 over head and 3 Honeywell 70 pint floor units until i can increase my budget. he said my power bill will be a bit high but it will get me by for the 6 months or w.e. ive also decided on two lg 24,500 btu window mount units for cooling. until i can increase to the mitsu mini splits ive been eyeballing

Gwhiliker said:

i spoke with a rep today and he suggested i go with a 110 over head and 3 Honeywell 70 pint floor units until i can increase my budget.

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Wowzers, that seems excessive for that size space.

Let me ask you this, do the three honeywell's make any dent in things as they sit now?

Renfro said:

Wowzers, that seems excessive for that size space.

Let me ask you this, do the three honeywell's make any dent in things as they sit now?

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i only have a 50 pint amazon model but it keeps my 5x10 at 40-50% with the exhaust fan and ambient around 20-50% depending on the weather. that tent only has about 1kw of lighting and these will have about twice the light and an extra 3 foot of headspace, and around 4 times the floor space, with that being said the math made me worry i wasnt sufficient . i thought ill be watering aprox 150 gallons per day meaning id be pulling out around 105 gallon per day which would be around 800 pints (72 plants in 5 gallon pots under 8kw of lighting in a 225 sq foot area assume ill be watering 2 gallons per day) with the 210 pints a from the floor unit and the 110 from the over head that brings me to 320 pints of dehu and ill have around 3000 cfm (through 10x39 phresh filters) of exchanged air from outside through 3 10" exhaust fans.

Gwhiliker said:

thought ill be watering aprox 150 gallons per day meaning id be pulling out around 105 gallon per day which would be around 800 pints

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Hmm, the worst I have ever had to pull was maybe 4 or 5 gallons per 1kW of HPS light in a 24 hour period and that included evaporative loss from flood and drain trays. I mean really, to have that much water transpired in a 24 hour time frame is super excessive IMO.

well atleast you know i wont have mold issues

Gwhiliker said:

i only have a 50 pint amazon model but it keeps my 5x10 at 40-50% with the exhaust fan and ambient around 20-50% depending on the weather. that tent only has about 1kw of lighting and these will have about twice the light and an extra 3 foot of headspace, and around 4 times the floor space, with that being said the math made me worry i wasnt sufficient . i thought ill be watering aprox 150 gallons per day meaning id be pulling out around 105 gallon per day which would be around 800 pints (72 plants in 5 gallon pots under 8kw of lighting in a 225 sq foot area assume ill be watering 2 gallons per day) with the 210 pints a from the floor unit and the 110 from the over head that brings me to 320 pints of dehu and ill have around 3000 cfm (through 10x39 phresh filters) of exchanged air from outside through 3 10" exhaust fans.

Click to expand...

I'm pretty sure your estimate on water use is a little bit high. I just finished a run with 44 plants in a 12x24 room in 5 gallon pots. I used roughly 35-40 gallons a day of water. I got by with one 50 pint and one 70 pint but couldn't get the room to consistently stay under 60 %. It hung right around 60 % as the high mark. Remember the AC does remove a good bit of water but you can't really count on a set amount from it.

I forget but what size is your room, because 72 5 gallon pots just wouldn't comfortably fit in my 12x24 room considering how big plants get in 5 gallon pots. And I thought we had roughly the same size room if I remember correctly. It would for sure be tight.

The most I could see you watering even with the 72 plants is 72 gallons. If you had less plants then the 5 gallon pots might consume more water but you can only fit so much plant mass in a room of a given size.

Apalchen said:

The most I could see you watering even with the 72 plants is 72 gallons. If you had less plants then the 5 gallon pots might consume more water but you can only fit so much plant mass in a room of a given size.

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I typically water my 10 gallon pots with 1/3rd of a 5 gallon bucket or 1.66 gal.