If they sprouted in the dark they would stretch trying to find some light. Too much red in your spectrum? Too far from the lights?Hello this will be my first grow. I went crazy and setup myself a rdwc system, but I'm already stuck at the first stage. Last week I planted 4 seeds. I used 7 stage RO water for rockwools including deion+UV. PH was about 5.7. I kept them in tank 80f 90% humid for 2 days. One of them germinated in 2nd day after that every day I had one popping up.. 4th day I had all 4 germinated. Morning of the 4th day I introduced them to light and the last one popped under the light. Light schedule is 20/4. Always kept the rockwool moist. There is a fan blowing a little air on them. Since the day one this guys are growing super tall. I know its a problem and there are many rasons might be triggering it, but if you guys can help I would appreciate. In the picture its at night before the light goes off. The temperature is a little low atm but my temps are usually between 75-80 and humidiry 50-60 aftrr I took them out 9f the humidty tank.