Yo Ho there frankthetank,
Here is a link that might be of some help, but I believe the guys here will have this pegged in record time.
marijuana-seeds.net/Thanks-ThankYou.htm
Some question for you,
1. Does that 5gal. bucket have holes in the bottom ?
2. How often are you watering ?
3. What ferts are you using , and how much ?
4. Your type of soil ? PH ?
5. Lights ? and time schedual of the lights ?
These are just some basic questions, but they will help in finding out what might be deviling your grow.
smoke in peace
KingKahuuna