My grow:
1 Northern Lights / 1 mystery seed
4 weeks into veg (pants are about 12", lots of growth)
2 bubble buckets, plenty of air, RO water (0 ppm)
Temps: 75-80 air, 65-70 water
PPM: ~300 (~90ppm of cal/mag) using BluMoon nutes (local company)
Using 2ml/gal Hydroguard
Roots are crisp white, no...