16
Step 7/ Mount lights with a strong, supportive, adjustable chain between the ceiling hook and the lamp
fixture. This allows the proper distance to be maintained for growth. Note that a hot HID may
explode if water touches it. Be sure to put up or protect when servicing the garden.
Step 8/ There are some necessary tools required to ensure that plants are showing correct growth.
Necessary Tools
•
Spray bottle
•
pH & soil test kit
•
Pruner or scissors
•
Wire (like twist ties)
•
Hammer/Nails
•
Measuring cup/cylinder
•
Pencil/pen
•
Notebook!!!
•
Yardstick (to measure growth)
Harvest-master already has the humidity/temperature sensor built in.
Check out our website www.Harvest-master.com for users tips, FAQ’s and other hints.
Equipment for Your Green House
A)
Devices you will need.
1)
Lights. These must be strong enough for the number of plants you want to grow. Your
supplier can help you with this. If you plan on using CO
2
then ducted lights are best. Ducted
lights have an enclosed reflector. Cold air from outside the room is helps reduce the build up of
heat since the cold air cools the hot bulb as it blows past it. Heated air passes to outside.
2) Extractor Fan(s). These are vital since it is the main method of controlling heat and humidity
build up. If you plan on using CO
2
, louvered fans that close when they are not running are best.
Extractor fan(s) must be able to replace the air in the Green House several times per hour.
3) Circulating Fan(s). The number of these depends on the size of your Green House. The best type
of fan is an oscillating desk fan with 15 to 40 watts of power. The object is to maintain steady
breeze in the room to keep air circulating over the leaves. This provides fresh carbon dioxide as it
is used up in air around the leaves and removes water vapour that would create high humidity
around leaves. High humidity increases the chance fungal infections and lowers photosynthesis.
B) Devices that are an advantage.
1) Carbon Dioxide. Millions of years ago when plants were evolving, the concentration of CO
2
was
much higher than the 0.04% concentration in our present atmosphere. Plants have never lost this
ability to use a higher concentration of carbon dioxide (up to 2000ppm). We recommend
compressed CO
2
with a regulator/flow control and a solenoid valve. A LPG or Propane burner
can be used if it is designed for automatic control. It will require a mains power switch ON/OFF.
2) Dehumidifier. These are a significant help to maintain humidity between 40% and 60%RH. A
dehumidifier will improve plant growth if you are using CO
2
due to longer CO
2
cycles.
3) Humidifier. An advantage if you live in a dry area where humidity is frequently 40%RH or lower.
You can buy one or,..we made one from a desk fan, rubbish bin, plastic trough, and small
aquarium pump. A fan blowing over dish cleaning cloths, which are hanging into a bowl of water
(as a wick) works pretty neat too!
4) A Heater. If your Green House can get cold when the lights are off, a small fan heater is a great
addition to your Green House. Low cost and valuable during cold nights.
5) A Cooling Device. These will increase the length of the carbon dioxide cycles by decreasing the
heat build up in the room caused by lights. More efficient cooling device can be used in place of ,
or in conjunction with ducted lights, removing the heat created by the lights.