grow room is @ 89º can I add extra inline fan???

[Warriorbuds]

85 F +......CO2 is useless!!.......Humidity is going to raise your heat.....usually....as the water molecules in the humid air can heat up quicker.....temps rise.

 

[Red1966]

co2 allows your plants to thrive at higher temps.

 

[Glaucoma]

Ahhhh, ok, I didn't know if cO2 attached itself to water....

I suppose if it did that then it H20 + cO2 would become something else. Ch2O2? LOL!

Water will absorb CO2 but no more easily than it absorbs O2. When CO2 combines with water you get carbonic acid, H2CO3

 

[Glaucoma]

85 F +......CO2 is useless!!.......Humidity is going to raise your heat.....usually....as the water molecules in the humid air can heat up quicker.....temps rise.

More misinformation.
1. Humid air is a medium for heat, not a source of it.
2. CO2 is most effective in warmer environments.

 

[BigTexan]

^ thus being able to reach 90s while running co2 thats the whole point. all my fans go off when c02 is on so it gets a little warm.

 

[Red1966]

Water will absorb CO2 but no more easily than it absorbs O2. When CO2 combines with water you get carbonic acid, H2CO3

Or club soda.

 

[Warriorbuds]

There's a conspiracy theorist in every crowd...... Its just facts? There is more water in humid air..... And with MMJ..........deep breath.....CO2 is no good with air temps over 85F.

 

[bravedave]

here's a good link i found, it will give you all the numbers you're looking for
http://www.cdicurbs.com/ductcal
also wanted to add http://cannaversity.com/calculators/lighting.php

This is great but it would be nice to see the exact calcs. I have seen people confused by concept of losing 25% of flow on a 90 degree bend (or 50% as alluded here). Its obviously incremental. So ignoring friction and length and concentrating on the bends...(and lets use the 50%)...your starting point is 100%, first 90 bend hit will reduce it to 50% flow then, your second 90 will reduce it to 25% of original flow because at that point you are taking 50% of 50 not of 100....third bend? 50*25 or a 12.5% reduction and so on...

 

[fridayfishfry]

it's the humidity that makes co2 useless. too high a humidity and the plants reject what is in the air (so they don't rot) including co2. this might be the case with high temps (so they don't dry out). stomas close up and transpiration (breathing) stops. read THE book.

 

[purplehays1]

not sure if u have room, but if u can get your carbon filter to be in line with the hoods, so that the ducting doesnt have to turn it will help and cost you nothing. Ducting taking turns drops the fans ability to suck air as hard out of the room.


Is your room getting a lot of negative pressure from the fan? like is it sucking in the door when u close it or sucking in the sides of the tent? If it is you probably are not getting enough passive intake, are the filters on your air intake clogged? Is your ducting insulated?

 

[purplehays1]

or get a strain that can take the heat and you wont have a problem, 87 is not ideal but some strains wont mind it.

 

[rob333]

i have mine sitting on 32 -33

 

[rob333]

21-22c with lights off wikked growth