I currently have 10 plants 4 have sexed female. 6 have not yet sexed. the question is, should this be done only during the veg. state? and how many times is it safe to top? or how many crowns should i attempt to achieve before i start decreasing potency? i have always went with just one crown, never topping,but now i lack the space and need shorter bushier plants. any comment, concerns, or answers would be appreciated!!