Hardness tolerance
The plants' water hardness requirement is only stated if
the hardness has an important effect on growth.
| Very soft |
(GH <3 dh) |
| Soft |
(GH = 4-8 dH) |
| Average |
(GH = 9-13 dH) |
| Hard |
(GH = 14 - 20 dH) |
| Very hard |
(GH > 20) |
It is most often the water hardness in
connection with the pH value which is of importance. A
coming page on water chemistry will contain more
information about this. |
