Here is a parts guide for assembling your own seed chamber at home. You might customize your own situation according to cost, ease of access of supplies, or other factors. However, this setup is the same one I use in Morning Star Conservancy’s seedling sanctuary, and is easily expandable according to need. Total cost for all items listed = $679.19, shipping not included.
For further cultivation guidelines, A Seedling Grow Guide Is Available Here
Grow Chamber
This Veg Trug unit is the best value I have found for cost and solid design. Sturdy and durable. Lower cost wire frame units available on Amazon and elsewhere will eventually cost more because of their flimsy construction. Zipper opening allows easy venting for heat and humidity control Replaceable clear poly and open mesh covers also available. Available online here.
Planting Trays
The Veg Trug greenhouse holds 8 of these 1020 flats, 2 per shelf. You need a total of 16 as the ones without holes are inserted into the ones without, as illustrated in photo above. They are available at Greenhouse Megastore in 10 packs, so you will end up with 2 extra insert trays with holes, and 2 extra trays without holes. Make sure and specify 2 ten packs, one with, and one without holes here. These trays can germinate up to 1,500 seeds each. 4 to 6 months following germination, you will transfer seedlings into a 72-cell propagation tray, which perfectly fit into the 1020 no-hole trays discussed above.
Available at Greenhouse Megastore here.
Humidity Domes
These covers fit the 1020 trays and provide extra humidity during the sensitive first several weeks of germination and growth. Available at Greenhouse Megastore here.
Lights
Just because everyone’s situation varies, (various degrees of ambient light exposure I am recommending 4 lights per unit, one installed under each shelf so that it illuminates the shelf below. The top shelf’s light will be in center of the space above, as there is no shelf above it. The 24 inch Sunblaster unit fits just right.
These lights available on Amazon here
Thermometer/Hygrometer
Monitor your temperature and humidity using a combo meter, widely available, such as this unit on Amazon.
Water Sprayer
It’s best to buy a quality sprayer. The one I use is this 2 gallon Husqrvana unit. Available on Amazon and elsewhere.
pH Meter
Best results occur with water adjusted to pH 5.5. Most groundwater water in the west is well above Ph 7. I use this high quality pH meter available on Amazon as it lasts many years with proper care, making it a better value than cheaper pH pens with much shorter service lives.
You will need to check your water source before ordering a buffering agent if required, either a pH up or pH down solution, depending. (Adjusting the pH of your water is recommended but not required.)
The Peyote Lorax 
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