I suggest poking around the different sections on this forum... perhaps paying special attention to "Grow FAQ" "Basic Growing" and "Indoor Growing" if you are growing indoor... and if you are doing indoor cabinet growing th is another sub-section for that. If you are doing Outdoor growing there is a section for that... you may also want to read through some peoples grow logs as there are a plethora of good information and troubleshooting in lots of them.