- Jan 7, 2011
- Currently Smoking
- OG Kush, Deep Cheese, Key Lime
I would use the RO over the tap. At 150 ppm that's not bad, but adding another 200 ppm of cal/mag is way overkill. In fact, I'm surprised you didn't run into issues doing that. Use the RO, adding enough cal/mag to raise the starting ppm to between 125 and 150. Then add your other nutrients.