I bought a grow tent set and started to grow these 3 plants but why are they turning creepy yellow and it seems they don't really grow as well, one of them looks a bit better but still weak. The first 3 weeks I had them on the balcony and looked a bit healthier back then. The large plant is about 3 weeks older and I keep it entirely outside on the balcony. Despite my balcony gets only about 6 hours direct sunlight, this plant looks quite good to me (will trim it soon). On google search it can be any cause, too much or not enough water or light, PH level or whatever.
Has anyone any idea why? I suspect most likely insufficient light and I should move the LED lamp much closer?
