A reflector is a very wise investment. W/O one you are wasting a lot of light. Reflectors direct light that would normally go up and to the sides back down toward your plants where you want it. I wouldn't grow w/o one. Best of luck and welcome to RIU.do i or should i use my reflector? long story. had 21 clippings, ended with one. its doing really well. my room is 10 x 10 x 7. the one lovely lady that made it, will be mommy. i have a 1000 watt mh not using reflector. temp is 90. do i need reflector?