No probs, its what where all on here for. new equipment leads to trial an error, i use 600w 6'' cool tubes to keep my heat down. as soon as youve got your set up dialled in, switch them babies over, there not as forgiving in flower.Thank you... My plant canopy temp is 28 degrees celcius and 40% humidity. I lifted my light to the max. Its a new 600w HPS, after having used CFLs during veg. Want to go to flowering soon. I appreciate the advice.