i had a separate veg chamber so i had a harvest every 60-80 days depending on the strain. i vegged for 6-8 weeks then moved the plant to the flower chamber. without a vegg chamber it would be at least 4 months between harvests with a scrog chamber like that. you have to vegg alot longer for scrog style growing, that's why a separate veg chamber is a must with scrog if you want a harvest every 2-3months. at least that is my opinion, but i had excellent results. good luck