Are you talking about the Mr. Nice Black Widow? I read that he is known to have created the original white widow.
This is a serious smoke once it cures properly. The best thing you can do for this strain is making sure it dries for the right amount of time, and drying for longer than usual is better than not drying enough. Err on the side of extra. Once cured then you really capture the nature of the smoke. His strain is a one hitter quitter.
Do not put the lights closer than 1 foot to the plant - check the heat output! Do this by making sure your hand can withstand the heat emanating from the heatsource for at least three minutes. If your hand can't handle three minutes of light then its too strong for the black widow.
Finally a big one here is don't over-nute! This strain is a picky b*tch that's why she's a widow. Most widow strains are not for novice growers.