Mr.sativa
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So above 80 is a no go? I've even read that 90 is optimal temp,because the stomatas would fully open @ over 80° I'm so damn confused I don't want to have to run my a/c if not needed and my Temps go up to like 86-88° during day and it's getting worse now that summers setting in and it's like 92° outside todaytemp 76-80 humidity 60-70 co2 1000..... this is what I like.
Thanks bud,so higher Temps are fine,just not above 85° huh? So r.h. needs to be @ least 60 then I assume,82-86' @ 1200 ppm during hot summer days
keep the ppm's up and the rh and you'll be fine
good luck
So above 80 is a no go? I've even read that 90 is optimal temp,because the stomatas would fully open @ over 80° I'm so damn confused I don't want to have to run my a/c if not needed and my Temps go up to like 86-88° during day and it's getting worse now that summers setting in and it's like 92° outside today
Can't with my work schedule,definitely will take that in consideration after this run almost done bout a month left. So will my ac suck out the co2 or just recirculation it,I have a 14000 btu a/c on wheels the window vented type,it's set on 80° nowonly 2k?
ever try running your lights at night when its cooler outside?
might be able to get it cool enough with just air cooled hoods plus blowing in fresh air
going to need a good filter for your air intake though
No no I'm a sponge!! I appreciate all the very detailed info !!!Ok let's see if I can't help clear the air some (pun intended) First off an accurate thermo is a must have in any indoor garden inexpensive ones are only good for collecting the most basic of information while the ideal thermo would be a day/nite or maximum/minimum type that measures the top high of the day and the lowest at nite the real expensive ones even turn on your ac/exuast and minim Temps in your room are very important (I'll explain why here) under normal conditions, the idea temperature range for growth is 72-76 degrees at not the temperature can not fluctuate more than 10-15 degrees (more like 10-12 imo) day time temperatures above 85+ degrees or below 65_ will stop growth and stunt/stress your plants out. However rooms using CO2 are different and if used correctly you can get as high as 95 degrees (NOT RECOMMENDED) Under the proper conditions witch are very demanding to maintain, higher temperatures step up metabolic activitie and speeds up growth. The warmer it is the more water the air is able to hold. This moist air often restrains plant functions and decelerates rather than speeding up growth. Other complications such as mold and pests often result from excess humidity and moisture condensation when the Temperature drops at nite. Heat buildup during warmer weather can catch you off guard and cause serious problems making proper airconditioner/heater, insulation, ventilation fans and thermostats necessary for optimal growth (dehumidifiers work just as well if it is the proper size for the room) common thermostats include single stage and two stage more more complicated controllers also regulate CO2 equipment as well as all other vents and air control devices but are not necessarily needed. temperatures can easily climb to excess of 100 degrees when poorly insulated and vented. The cold of winter is the other extreme to deal with and it's impossible to control acts of God (black outs and such) Now to brass tax
When CO2 is enriched to 0.12-0.15% (1200-1500 ppm) a temperature of 85-87 degrees F promotes a more rapid exchange of gases. Photosynthesis and Chlorophyll synthesis are able to take place at a more rapid rate causing plants to grow faster. Remember, this extra 10-15 degrees water, nutrients and space consideration, so be prepared! Carbon-dioxide enriched plants still need ventilation to remove stale, humid air out and promote plant health. Propane and natural gas heaters commonly known as CO2 generators increase temperature and burn oxygen from the air creating CO2 and and water vapor as a bi product, this dual advantage makes them practical but no more economical than CO2 tanks,I am not a big fan of heaters and don't recommend using them.
HUMIDITY
This is a big part of the equation in CO2 treated rooms. Humidity is RELATIVE! Relative humidity is the ratio between the amount of moisture in the air and the greatest amount of moisture it can hold at the same temperature. Relative Humidity is measured with a wet-dry hygrometer. When the temperature drops the humidity rises and moisture condensates on surfaces.for example an 800 cubic foot room can hold about 14 oz of water if the temperature is 70 degrees and relative humidity is at 100% . When temperature is raised to 100 degrees the same room will hold 56oz of moisture at 100% relative humidity.
Here is a basic chart to make your equations off of
A 10x10x8 room 800 cubic feet can hold 4oz at 32F, 7oz at 50F, 14oz at 70F, 18oz at 80F 28oz at 90f and 56oz at 100
Most plants grow best when their relative humidity is from 40 to 60 percent as with temperature consistent humidity promotes healthy and even plant growth. As it affects the transpiration rate of the stomata when it's high stomata close and when it's dryer they open to increasing transpiration, fluid flow and growth
So I hope this helps let me know if anything needs more explanation being as you only asked for the rite temp (which is in there) i doubt you will want to hear more droning on :) good luck
Measuring and monitoring co2 levels in the air is a little expensive and often not necessary for small gardens with only a couple lights,
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