basically, far as i know, if its heat stress, simply move the light a lil higher.
i dont think a reflector makes any difference in that respect.
hold your hand open, palm up at top of the plants. if you 'feel' the heat and cant keep ur hand there for a min or so without feeling the heat, move the lights.

if u move lites too far, worst thing that can happen is they stretch a lil, then readjust.
if they are too close, they fry

if all else fails, maybe go post up and let Stitch take a look.

good luck!
Rock.Steady Reviewed by Rock.Steady on . Nutrient Problem? (with pics) I am a long time outdoor grower and a very inexperienced indoor grower. I am officially working with 2 sour diesel plants from clones that were started using the water cloning method, Currently I have a small 4'x3' grow room made out of some OSB (particle board),and is sealed using elastomeric paint .I ran a 65w Flourex CFL until I bought a 150w HPS which may have gave my plants a bit of a culture shock, since half the leafs looked brownish in all different spots of the plant. I use 3 gallon Rating: 5