Agriculture Reference
In-Depth Information
This is my very favorite Hanna brand liquid pH testing meter
These are handy for reading new water sources, or giving you an idea of how liquid fertilizers affect
the pH of the nutrient solution. Many people new to TLO growing will inadvertently use a liquid organic
fertilizer that is full of organic acids for chelating nutrient elements. These types of all-natural/organic li-
quid nutrients can really take pH levels down far, which will adversely affect microlife, in my experience.
If you can afford it, a liquid pH meter will save you time and money by having it, and I would always go
with Hanna brand for a liquid pH meter.
Totally Dissolved Salts (TDS) Meters
TDS meters used to be pretty expensive but lately they have come way down in price and you can get a
fineonefor$30,noworries.ThesemetersreadinPPM(PartsPerMillion)andcangiveyouarelativeidea
of the levels of dissolved minerals in a given water source. So say if your tap or well water reads 300 PPM
on your TDS meter, then that is über-hard water that's full of dissolved calcium, magnesium, and other
elements. You would find it almost impossible to grow TLO-style in containers indoors with water that
high in salts. However, if your tap or well water was more like 60 PPM then you would have much better
chances of that water working well in your containers indoors.
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