Polystyrene sheet (30 to 40mm thick). I used a piece from packaging that was to be thrown away. (1m x 0.8m) R50.00 = $5.00
Plastic garden netting 2m x 1m (I used 4mm as the pond has small fish, 12mm should also be ok) R50.00 = $5.00
5cm slatted pots x 16 R16.00 = $1.60
Coir fibre (coconut hair) 50 grams R5.00 = $0.50
Vegtable seedlings x 16 (Lettuce in this case) R16.00 = $1.60
Cable-ties (1 pack of 100 small cable-ties) R15.00 = $1.50
50mm hole saw
40mm hole saw
8mm Drill bit
Total cost for materials without tools in South African Rand R152.00, U.S. Dollers $15.20
Time - Approximately 6 hours
Step 1: Measure Length and Width of Polystyrene (for the Plastic Garden Netting)
Step 2: Measure and Cut Garden Netting
2 x Sides (1m x 0.3m)
2 x Sides (0.8m x 0.3m)
Used scissors to cut the garden netting to size
Step 3: Join Sides of Netting
The net is to stop fish from feeding on the roots of the vegtables.
Step 4: Cut Holes in Polystyrene
Measure and mark the distances between the holes to be cut.
Pre drill each hole with the 8mm drill bit (acts as a guide from both sides of the polystyrene sheet).
Cut holes in the polystyrene sheet with a 50mm hole saw first. Cut about 20mm deep.
Use the 40mm hole saw from the other side to complete the hole.
This leaves a step for the 5cm pot to rest on.
Drill 8mm holes on the edges (To attach veggie raft to the netting).
Update: one can also use an offcut piece of car exhaust pipe, heat with a blow torch, proceed to make the holes for the net pots
Step 5: Attach Veggie Raft to Netting
Step 6: Plant Seedlings Into 5cm Pots
Step 7: Float the Raft
Make sure that the bottom of the 5cm pots are just touching the water
Step 8: Wait
If you do not have fish that feed off plant roots, there is no need for the net.
Harvest and enjoy