In fact, I do have a nutrient meter, and after the full dose, the reading was at 1.0-1.2 EC. The initial grow medium was the sponge which came with the aerogarden. Temp: 65-80, humidity ~60%, ph: 58.-6.2.
I havent checked the ppm or ec since I have performed the water change, but it probably wouldnt register on the meter anyways since im using distilled water and no nutes right now. Still keeping an eye on them..