4.2.1.8 Adding CO
2
Nutrient
4.2.1.8.1 Citric acid & sodium carbonate
(1)
On the 8
th
-9
th
day, start adding CO
2
Nutrient. One pack of citric acid & one pack of sodium carbonate
(Figure 12). One pack is about one teaspoon.
(2)
Stir with the rod (Figure 13), add 1-2 drops of water, and attach the box to the slot of the slotted bar
in the 2
nd
layer.
(3)
Suggest to repeat every morning. (Remove the remaining material inside small container)
(4)
Water could be added in the evening for adequate reaction. (Do not add too much water, to avoid
any liquid splashing on the leaves. (Figure 14)
(5)
On the 14
th
-15
th
day, add a new CO
2
box at the slot in the 3
rd
layer. Add 2-3 drops of water, and place
them at the 2
nd
, 3
rd
layer separately.
4.2.1.9 Move the 1
st
batch of seedling
(1)
After the seedlings grown for 20 days, add water & Nutrient Solution to the 2
nd
layer; and move
those seedlings to 2
nd
level grow tray.
(2)
Note
: EC value of the middle stage would be around “1.5”.
(3)
The usage of nutrient solution just for your reference, for different nutrient solution maybe different
usage.
(4)
Add nutrient solution A and stir it. Then add nutrient solution B and stir it.
(5)
On the 26
th
-27
th
day of planting, the water would be absorbed very fast.
(6)
Refill water until it reaches the “2.5” mark.
(7)
Mix 2 caps of Nutrient Solution A and 1 cap of Nutrient Solution B into 1 litre of water
(8)
Add the mixture into the tray until the EC value become “1.8”.
Water Level
Reach the "2.5" mark
4 litre
Nutrient Solution A
4 bottle caps
120 ml
Nutrient Solution B
3 bottle caps
60 ml