Solar my 2nd story terrance. I have a 400 MH and 600 HPS in 4x4x6.5 tent. 3 KK, 2BK, and a SAGE come in soon. The weather in So. Cal still hot. Girls are getting Bt/Neem/fed, hardened off. inside when/if weather cools? They will come outside on Spa Days! I run both the 400MH and 600 HPS in flower and results have been good. it is a heat/ventilation question. if our So. Cal winter is cool, perfect.
Peace.