yeah, I used them small cups once and I'll never use them again.
Plant your seedling in a one gallon pot. Sounds like you might be experiencing problems possibly due to not enough venting with the cups.
Hope this helps.
Can you check your waters PH?
RAINHAZE Reviewed by RAINHAZE on . HELP ASAP!!! CAN YOU SAVE HER... I have a small seedling, roughly a week and half old. Never had this problem before. I wish I had pics but I don't. I've been searching for days, literally. It has it's first set of leaves(cotys or whatcha call it), then one set of real leaves and then the second set is just starting to come out. First the cotys turn yellow, starting from the tip/end till the whole thing is yellow. It took about 24 hours for the first set to yellow, but now the first real set of leaves are starting to Rating: 5