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| Heat
build up can really become a problem during the summer
months indoors. Excessive temperatures usually mean
severe consequences for your indoor plants. A point
to keep in mind is that plants, like us, also suffer
from heat stroke. Also insect populations indoors
are affected, as they will breed faster. The cooler
your room is kept the slower bugs and fungus will
reproduce. Somewhere between 32-35 degrees Celsius
(90-95 degrees Fahrenheit) is as high a temperature
your plants can tolerate. Preferred temperature is
somewhere between 24-29 degrees Celsius (75-85 degrees
Fahrenheit). |
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| Info/FAQ's
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Articles
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Information
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FAQs
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Home |
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- Temperature & Humidity |
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- Keep Humidity below 60% day and night to avoid
problems. Try to keep night time temperatures within
10 degrees of daytime temperatures to avoid excessive
moisture condensation and related problems.
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- With the rising summer temperatures grow room
temperatures above 28”C stall growth. Extra ventilation
could be required for both day and night. Plants
will also use more water (plants can use twice as
much water as temperatures climb, running your lights
at night will help keep the room cooler)
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- CO2 generators [LPG burners] may start doing
more harm then good as they elevate room temperatures
too much. This shouldn’t be applicable to ordinary
CO2 candles and lamps
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- Keep pots off cold concrete floors. Puts pots
up on insulation pallets or Styrofoam to protect
from cold floors as even in summer certain surfaces
can remain quite cold. Large
differences between air and soil temperature
can cause your plants undue stress.
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- Ventilation
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- Have lights operating through the night when
temperatures are much cooler than during the day.
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- Vent fans are rated by the amount of cubic feet
per minuter that they are able to replace or remove.
Make sure the fan(s) you install can replace the
volume (cubic feet) of your room in about five minutes.
To calculate total volume of room, Length x Width
x Height = Total volume. A 10 by 10 by 8 foot room
has a total volume of 800 cubic feet.
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- If possible locate your room underground, in
a basement, that will allow the insulating qualities
of the earth to have an effect.
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- Be sure to have an oscillating
fan operating in your room, this will help to keep
an even temperature, top to bottom, throughout your
room by circulating the air.
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- Depending on your
average temperatures you may find it is necessary
to run the vent fan(s) 24 hours a day.
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- Irrigation
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- More water is used
in hot weather. Plants transpire more water but
use the same levels of nutrients. This will raise
your CF levels increasing the need to regularly
check CF and water levels.
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- Make your reservoir
has a lid on it, lots of water can be lost threw
evaporation if left uncovered.
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- Measure CF and
pH of irrigation runoff water to check for nutrient
buildup and acidic growing medium. Correct by flushing
and raising pH of nutrient solution.
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- Cool nutrient solution in hydroponics systems
to guard against wilts. If unable to cool solution,
add a small amount of anti disease/fungus solution.
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Pests
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- Inspect foliage for aphids, whitefly, spider
mites and eggs. Spot spray with pyrethrum or neem
oil. Pests must
be dealt with as soon as they are seen, if
white fly or spider mite get a chance to take hold
then biological controls may be the only thing that
shifts them e.g. predator mites E for 2 spotted
mite (spider mite) and predator encarsia formosa
anti white fly.
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Odor |
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- Use an Ozone generator to remove pungent odors
from expelled air from grow rooms.
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- For mild odors, some citronella oil or odoursorb
carbon filters may do the trick.
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