1.Well the 400Watt MH is far superior to the 40Watt Cool white bulbs, I was using.. This was expected..now obviously I am just going by looks... but the runt, which I had thought about killing doesnt look like its a runt anymore.. its start to grow normal, its still the smallest of the bunch but is looks like it will catch up..

2. There is an heat issue, but I have a fan blowing between the light and the canopy and I also have a fan blowing out hot air from the top.. I can't add a A/C unit...

3. Using Fox Farm BIG Grow.. the bottle says use 1 teaspoon every water, this is their weak solution.. I started with 1/4 of that, now I am at 1/2.. This Saturday I will be at 1/1.. I didnt want to burn them, I dont see any problems yet.. but I belive in following the bottles direction so they will get the 1/1.. there is also 2-3 drops of Superthrive in the water... the bottle say 1/4 a teaspoon for full size plants, so I am going to wait until they are a little taller.. Seems like I have to water a lot, the blowing fan and the heat dries out my Perlite/Soil mix quickly.. so Water well every other day, and then every day in the morning I mist the top just to keep it moist.. overwatering is an easy thing to do, so I am playing it close, I will back off if I see any problem..

4. Still hoping to get to 18 Inches, I think if I would have used 400Watt MH sooner... I would have bigger plants, I was just playing it safe