The last grow, I grew under natural light in a greenhouse with shade cloth that was required by the majority of plants within the greenhouse. This time I'm growing totally inside. I started my seeds under a fluorescent light. Then switched over to a 200 watt cfl with a Sun Suystem 8. Once my father-in-law leaves (day after Christmas) I'll be putting them under a 600 watt MH light. They are currently on 18 hours of light and 6 hours of dark. The plants are approx. 18 inches tall and have been topped a few times. I was thinking about letting them go under the current light cycle for another month before switching over to 12 - 12. So here is the question. Is it a good idea to go another month on the current light schedule under the MH before switching over to 12 -12? Also without going into all the strains of the 6 plants how much taller can I expect them to get as I won't be topping. I'm thinking they will double in height or maybe 1 and half times as tall as they currently are. Am I correct? Height in the growing area may become an issue.
Thanks
Thanks