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Hello Jessica,

Thanks for your message – this a very common question and we are happy to answer it for you. Yes you may use Cali Pro and any other our nutrients and supplements in a nutrient system. Always keep in mind that application rates may vary depending on the water condition and the type of growing medium. In addition, the plant species, size and age should be considered when dialing in the optimal application rates for your crop. So while the feed chart is an accurate assessment for hydroponic feeding, you should in theory tweak the application rates on the feeding chart by measuring the ppm of the nutrient solution. [ Always check your pH before and after feeding and watering ]. Please see the charts —>

Figure 1—all growing media except DWC/aeroponics:

Figure 2—DWC or aeroponics:

The charge of the nutrient solution should be measured correctly before applying nutrients to the selected growing medium. A second measurement should be taken from the nutrient run-off after it has been applied to the growing medium in order to assess the correct ppm (or, if you measure electroconductivity, the EC) range.

To figure out what watering/feeding ratio is best for your plants, ppm is a good indicator. The right concentration to maintain in a soilless mix is 500–1000 ppm. So, if your runoff after feeding is 30–50 percent, which pushes through old nutrients rather than letting them accumulate, then you can feed your garden daily. If, however, you have little to no runoff, then you run the risk of overfeeding and “burning” the plants with too high concentrations of nutrients.

We recommend testing the ppm before and after feeding to ensure you stay within the right range. You may find that a cycle of feeding, watering and watering again is more productive, depending on your program.

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