Saving Money on Gen Hydro Nutrients With A PPM Meter

by RAPTOR SOARING
(MOTHER EARTH)

I have separate water farm buckets that I use only rain, compost tea and GH nutes and I too have found that GH recommends very high concentrations and too often scheduled changes.

With a ppm meter I monitor the levels daily and record it. I add only rain or compost tea to top off between changes. After six days some ppm readings will start to drop some take ten or so to exhibit a drop of over a hundred ppm. I wait until the reading is over two hundred and fifty lower than the start to change the nutes.

Once the readings start to drop , they go down fast. Fifty to a hundred a day is common. But for the first week they hardly move, if at all.


The ppm that GH recommends is unnecessarily high, in my experience starting with 10 to 15 % less is okay , no noticeable differences. 1000 to 1100 works fine.

A ten dollar ppm meter paid for itself in no time at all.

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