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Yes, that was a typo. Thanks. I think you are multiplying the formula per liter rather than gallons. The 16 is the ratio per gallon, so I need to multiply it by the conversion from gallons to liters and therefore the 10.5 rather than the 40 , right? Do you have any advice about the PPM?

What do you think it should it be? He also said you don't have to measure the PH if you use RO. Not sure if RO is the same process as my filtering one. Do you know?

I thought the Lucas Formula said my PPM should be around 1300. I filter the water before adding the nutes. TDS @ 0.7 conversion: 0-4-8 = 663 ppm 0-5-10 = 829 ppm 0-8-16 = 1326 ppm

Hi This is my first time using the aeroponic system. In the third week of the blooming phase, my leaves started yellowing. Assuming this meant the nitrogen was low, I started looking for a solution. That’s when I found the Lucas formula and thought it looked like he really knew what he was...

Hi This is my first time using the aeroponic system. In the third week of the blooming phase, my leaves started yellowing. Assuming this meant the nitrogen was low, I started looking for a solution. That’s when I found the Lucas formula and thought it looked like he really knew what he...