I'm growing ICE in bubble/DWC my ppm is between 1100 and 1200. I'v been reading that people go up to 1600 ppm or even 1800 ppm. My girls are looking beautiful and show no signs of lack of nutrients but I still find it interesting. Sorry, I guess I should just ask my question. Is 1400 to 1800 ppm really necessary?
Thanks for any input.
Thanks for any input.