Since you posted in the hydroponics section I am going to give you hydro advice.
There are a few reasons that the smoke could taste harsh.
Your drying process- Nowhere did you say you allowed a period for the weed to cure. You should dry it fully, then jar it up in mason jars and open them once or twice a day for a half hour until you don't feel any change in moisture content from the time you close the lid to the next time you open it. This is called CURING and it is a necessity.
Your flushing process- How do you flush? Do you use a clearing solution?
Your fertilizer regime- Is there a significant amount of Nitrogen in the fert you use to flower with? Excess N leads to harshness. You WANT the chlorophyll to start breaking down before harvest.