Seedling is in an 8 gallon bucket in rdwc being top fed 4 times a day 15 minutes each feeding. Water reservoir is a ph 5.6 at 65 degrees F. Tent is 75 degrees F humidity between 40-50. Leaves have been getting lighter as the plant is growing. Ppm is at 480 using GH flora series. Any suggestions to darken leaf color or is it looking ok thanks