This is my first grow. I am growing 4 plants and i have them in a germination tray.(also when should I transplant them out?) 3 of them are looking fairly good except I have a little bit of yellowing on the edge and tips of the biggest one, but my main concern is that i have one that looks like skin looks when it burns and blisters. I started them with 6 23watt cfl lights, after reading on here i found that the bulbs where 2700k so i switched them out for 4 40watt 6500k florescents, it has been a few days and i haven't seen any improvement. Each plant is in a rockwool cube and the tray is filled with 1 teaspoon of max grow per 2 gallons of water mix.