Fertilizers don't really need to be introduced in the plant until its about 3-4 weeks old, then start with a high Nitrogen based fert, example: 30,10,10(NPK). Then when flowering change to a 10,30,10(NPK). This will allow for healthy bud development.

Water only when the soil is dried down about a 1/2 inch. Underwater can cause your leaf tips to burn & branches to droop. While over watering can cause your leaves to droop.

Give Ample Lighting especially in flowering, & make sure temps are between (65-75º F).