Please help very new planted 2 femerized bubblicious plants and one other not sure free seed any way the oldest plant is a week yesterday in dirt tent 2x4x7 ft. 4in . Inline cooling light 600 watt sodium in cool tube 250 cfm in line fan cooling tent temP at 79 humidity 42 ....used mass hole fox farm and root organic ...18/6 for light plant is starting to yellow and curl up please help