Agriculture Reference
In-Depth Information
Figure 9.14 - Ppm reader (TDS meter).
If you do not have a reader you can still grow a good crop, but
it takes practice to get it right. If a cannabis hydroponics grower does
not have a ppm reader, then they tend to replace the reservoir more
often instead of topping it up. That way the grower is certain that the
new solution will contain everything the plant needs. If you have a
ppm reader then you only need to top off the reservoir as needed. PPM
(parts per millionth) readers can be expensive, but over time they will
help you save money on the cost of hydroponics nutrients.
HYDROPONICS GROWING MEDIUMS
There are many hydroponics mediums to use that your plant
will take root in. Rockwool appears to be the most popular and comes
in either slabs or cubes. These cubes vary in sizes from 1" to 6" cubes.
The slabs can be cut to suite the shape of your pot or container.
