Looking for an indoor strain for summer

Temps were I am reach well above 30c for a lot of summer I don't really want to run another air conditioner (already will have 1 or 2 running in the house ) I'll be using cool tubes by then , but is there any strains ( indica preferred ) that do fine in that heat , air circulation and fan and what not won't be a problem .... Or should I possibly look into c02 for summers ? Decisions

High heat and low humidity will burn through lots of potassium so as long as as you keep the P available and the humidity high you will be ok i like the Afghan strains for heavy hitting indicas