seed planting and propagation
seedling propagation
how to make an aquarium heater
Two Seedling Tray propagation box 2.
Setting up the propagation unit  
  1. photo of a two tray aquarium heater propagation box
    Side view of a two tray aquarium heater propagation box.

    Close up of the box with one of the trays removed showing the aquarium heater in the water.
    Close up of the box with one of the trays removed showing the aquarium heater in the water below.
    Place the crate on level ground in a sunny position and fill it two thirds with water. 
  2. Put the aquarium heater in the water so it is fully submerged, connect it to power and switch it on. 
  3. Put the seedling trays in place, and plant the seeds in your preferred seedling punnets or mini pots and put them in the seedling trays.  Cover with two Grow Top lids. 

    Warm air rising from the heated water will be trapped below the seedling trays and heat them up These instructions should only be seen as a guideline. 

  
Other construction options
 These instructions should only be seen as a guideline.  There would be any number of ways to convert a range of containers to a two tray aquarium heated propagation unit, all it would take is your ingenuity. 

a simpler option
If you are looking for an aquarium heater seedling propagation unit that is simpler to make and does not require carpentry then follow this link to the How To Make An Aquarium Heater Single Tray Propagation Unit  webpage.



WARNING: Aquarium heaters are not designed for outdoor use. To avoid any possibility of electric shock make sure water always covers the heater in the crate, the heater and extension cord plug connection is protected by a double insulated cover suitable for outdoors and the electricity is connected through a safety trip switch.  





















PAGE CREATED 2015-10-22  Page modified 2016-08-04