20 to 25 kg per m 3 . They will still grow bigger
which will increase the biomass in the fish tank
over time. The bacteria in the biofilter normally
takes approximately 1 to 3 months to mature.
This process can be kick started by inoculating
the bacteria culture with commercial available
products. After the stocking of the fish, the
seedlings can be planted in the net pots. The
lettuce seedlings normally take 4 weeks to
reach a marketable size. It is very rewarding
to harvest your own fresh leafy greens and
you will get much satisf