Discussion in 'Grow Room Design & Setup' started by Sam&Max, Nov 16, 2017.
the top picture is the veg room.you can see the on demand water heater on the left side.
the second pic is the left side of flower room .the barrel in the back is where the dehumidifier water goes.
the third pic shows the right side of flower room.the dehumidifier is on the wall in back and the hose goes to the barrel you saw in pic two.
the two barrels are my nute barrels which auto top off my system.you can see the mini split in top right hand corner.
just to left of the dehumidifier you can see part of the opening for the air exchange that goes from flower room to veg room.the vortex fan is mounted to the ceiling in the veg room.i painted the cavity black that has the baffles in it to light proof the air exchange.
Well, you have a single fan on a forced air furnace that recirculates the air in an entire house so I believe a single fan is all that is required, with sufficient ducting to produce the airflow you are looking for.
Thank you for that very very informative post
Ok. It seems like I live in a colder region like you
I was wondering, why you need more propane in winter? I thought plants consume more CO2 when it is hot??? And you want to lower the temperature in summer more? I thought you get better results with CO2 when it is hotter...
Actually these propane heaters look interesting. They seem to be much cheaper than the CO2 generators sold by autopilot which you can use only for CO2 generation and which have no possibility of water cooling.
Do you know if it is possible to run the heaters without water?
I was thinking about the fan stuff and did read that thread... https://www.icmag.com/ic/showthread.php?t=100823
It explained me how all that stuff works. It seems like if you use two fans, it mostly just increases the static pressure and if you have stuff which impedes the airflow, you can encounter it by increasing the intake holes... But I guess mixing the air in each room by oscillating fans might be important... How big are the holes in your wall where you change the air between the two rooms? You might get even better results with bigger holes.
How much you can yield with your setup, growing method and the amount of plants?
Ahh yeah... tell me why did you insulate the two rooms to each other? I have to decide how I will do it. But I guess I will not insulate the wall which they share together.
There is one thing I am not decided yet.... I wonder if I really should make the ceiling 8 foot low. I have ceilings which are 11.5 foot high. But I think it is a bit too high... But I don't want to build the room and then realize I built it too low.... :/ How do I find out the right heigt for SOG on a table?
You can use a dual hose air con unit, they don't pull anything from the room. Best sealed if you're using co2, vent the co2 out at night for best results.
what is better? mini split or dual hose?
@zep_lover Thank you very much!
Especially your solution with the propane heater, the pump and the tote, will probably save me a couple hundred dollars. If I keep the tote in the growroom, I can keep the generated heat in the room. In summer I can put the tote outside of the grow room and get rid of the heat. Like that I can stay with propane and don't need to buy CO2 in summer. Also I don't need to buy an expensive propane generator from like autopilot. I could use a less expensive water heater.
The lights will provide about 9000BTU of heat while they are on, without insulation, this will need to be topped up in the dark period.
CO2 is useful in summer as it lowers the AC cost due to allowing a higher room temp.
Yes, one reason more to go with insulation.
Mini split i guess, but you'll have the noisy outside unit...depends how discreet u need to be.
Actually I heard that there are units which are pretty silent :/
Would be behind the building. So it wouldn't be so much a concern. I would have more concern, if somebody sees it and wonders, why that building has a minisplit. Maybe it is possible to build a small containement for the outside unit.
Yeh especially in cool or colder countries/locations, outside aircon units would naturally raise questions unless the purpose/business usage of the building explained the use of aircons(breaking bad comes to mind)...you could disguise it as a dog kennel or similar maybe...sounds crazy, but possible if the unit was pretty silent.
mini splits also heat so they do not look abnormal working in winter.mine is very quiet.just make sure you get a unit that is rated to work in cold weather.some are and some arent.
if you look at hydro supply places for a water cooled co2 generator,it is just a on demand water heater like i am using.i did have problems with using to small of a tote for the water at first.if the water gets to hot the water heater will not fire up.that is why i got a bigger tote.i originaly used a 5 gallon bucket but the water got to hot and it wouldnt turn on.
Thing is here in my country and the other countries in europe I have been, I have never seen a mini split in a residential building. But I am not sure what kind of devices they use in commercial buildings.... The unit with the grow is not a residential building but also pretty clearly not a commercial unit...idk... I guess I need to do a dog shed or something ...
I will sort something out till summer.
I build a dog shed and put a minisplit inside which makes bark noises A 'stealth' mini split which keeps also robbers away
last winter before i got the mini split installed i used a six inch fan and carbon filter to vent the flower room when it went over a certain temp and then it would shut off when it got under the low temp.it vented into the main garage.when lights out the dehumidifier then kept both rooms in temp running .the fan controller was pretty cheap.Inkbird Itc-308 Digital Temperature Controller Outlet Thermostat, 2-stage, 1100w, w/ Sensor.35 bucks on amazon
did it work out good with the co2 and venting with the fan?
did not have that running till i put mini split in.i still had another grow going some where else.the fan barely kept up and at that time i only had 1000 watts of led running .
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