We will swap the bulbs to HPS when we flower and change the timer to 12/12. We plan on running the lights at night for heat reasons during the flowering. We have made a few mistakes, but survived them all so far. I wish we had covered the lower portion of the wall with reflective material. I think we will do it within the next few days. I wanted to ensure that the plants did not deal with any other stress for a while. Our goal is high quality with yield. I wish I had two rooms like this. We started the seedlings in a grow tent. Currently White Widow Max and BubbleGum for this grow. This setup is fairly automated (which I appreciate after the grow tent). Heat will be our challenge. We will get mothers out of this group so we can start cloning these strains. When the cooling fan kicks in I have the CO2 off but not necessary as far as I can tell, drops very little and just one person breathing in the room drives up the CO2 quickly. I have left the room more than once due to driving the CO2 levels to high. Anyone can buy good equipment, but it does not replace experience. I listed our environment specs because I was hoping for some feed back for anyone who has used the sealed room method. Thank you to anyone who watches our posts and offers advice.