No I went six inch all the way like you told me too....It's definitely cooler to stand next to the tube instead of the mylar.....you can get within several inches of it and I have a good fan running but the temp coming off the mylar is in the 90's......probably between 80-85 in the air next to the tube.....not bad at all....just BRIGHT!!

Big blueberry is loving it.....the newbies melted over in about ten mins so I've had to pull the light back but even then it gets better coverage so no probs there.....They're stretching toward it today so they want it lower now. it's just the HEAT.....

I think i'll definitely have to make a change in the walls from the mylar with it....I'll see what you guys end up doing and go from there......I may try pulling that portable wall in the meantime and go with two sides of mylar but eventually I'd like to go back to four sides.