Thanks for the help, I'm new to this and trying to wade in. Anyhow medium is just plain no nutrient potting soil adding fox farm organic nutes, using a 600 watt mh/hps grow light. Closet grow. Hood is vented out up into the ceiling and 2 6 inch fans for air circulation. Using panda plastic for reflect. Just switched to flowering 2 weeks ago, temp stays between 87f. To 90f. And slumber time gets down to around 66f. To 64f.