Most of my 20 seedlings(2-3 weeks old) leaves are turning yellow and drooping, some of them bad and getting worse. What is causing this? They are NOT currently on any Nutes. I just switched them from Burpee Tray cells to 5" Jiffy Pots. Please help me. 1st, Could this be from over or under watering them? Im not doin anything else and theyre young so I dont know what else it could be. 2nd, At this age how many times a day(s) should I be watering these plants? The soil seems to be drying up very fast. I took them off the heating pad too. 3rd, What is the optimal PH for the soil to be? Im goin tomm to get a tester for the soil PH. 4th, My water Ph is 7.77 so Im goin 1st thing tomm to get something to bring it down. Any suggestions on what to get? 5th, Should I add some Nitrogen and/or Magnesium? If yes, how much per day or week? And what is the ratio to H2o? Thanx for any answers, I would really, really appreciate any help to save my 1st grow.