What's up rebel!?Blossom drop is common under these three conditions:* The blossom was not pollinated. (blossom drop due to this is rarely the case).* too much nitrogen in your nutrient solution.* Dry arid / windy conditions.I can almost guarantee that your blossom dropping problem is related to your lack of humid air.Peppers generally do the best in 50-60% Relative humidity.Add a cheap cool most vaporizer to your grow area. Make sure you have fans moving the humid air around. Are you in an enclosed growing area? If so, a fan speed controller attached to your exhaust blower is a great way to control humidity.Hope this helps!