I have 10 lemon seedlings. I just repotted into a organic potting mix mixed with about 50% perlite. And tiny bit of pea gravel at the bottom of the pots. They get watered when the soil feels dry and I water with bottled water at room temperature. They get plenty of sunlight. Some look great and some look sick... Any advice? Also are they growing good for 1 month since they sprouted? They are indoors.