TDS Monitor for Phalaenopsis Orchid Care

[New2Orchids2020]

So not even if I opt to use multiple fertilizers such as Cal-Mag, Garden Lime, Seaweed Extract, Regular Orchid fertilizer?

[Ray]

Originally Posted by New2Orchids2020

So not even if I opt to use multiple fertilizers such as Cal-Mag, Garden Lime, Seaweed Extract, Regular Orchid fertilizer?

First of all, TDS meters are generally not very accurate.

Second, besides all of the items listed not being fertilizers, each chemical blend will have its own, different TDS reading/actual concentration relationship, so setting a target of “X” ppm, measured with a TDS meter might be fine for some, insufficient for others and toxically overdosed for another.

I’m going to disagree with ES on “it doesn’t matter for orchids”. Yes, some plants, like phalaenopsis, are pretty tolerant of a wide range of water quality, but knowing what you’re dealing with and controlling it can make them grow a lot better.

You might take some time and read the variety of articles HERE to get a better understanding.