Hi guys, i'm relly concerned because this is my third on growing and i'm encountering the same problem i always had but i can't understand what's happening. The plants starts very well every time and growth till the 4/5 week then lower leaves start to turn yellow and everything go south.
In the previous plantations i was using filtered water and biobizz products. I thought that could have been the problem so i bought Advanced nutrient PH Perfect stuff and used tap water,
What could you think it's happening?