Hey Guys, I've spent the last 2 days searching the web for answers, but have finally resorted to asking the professionals for some help. There are 7 seedlings that all started great and range between 4-6" all with their first set of leaves. They are under a 250w MH in a 2.5 x 2.5 space with the light approximately 30" above the seedlings. The space is covered in reflective material. Yesterday, I noticed that the first set of leaves on 3 of the seedlings were yellowing and standing up. I did research and came to the conclusion that my PH was too high, or there were too many nutes in the soil. I flushed them all with about 2 cups of distilled water, which caused a green runoff. Two of the seedlings seem to be improving, however one looks to be shriveling a bit. Any advice would be greatly appreciated. I tried to include as many details as possible without rambling, but its possible i left something important out. No I don't have PH tester, and yes I know I need to go get something. Besides this however, what else shall I try?