Growing sativa and indica in same room

m0use has nailed it for you... there won't be any problem at all! If the sativa gets too tall, you can always LST her so she's relatively the same height as your indica. No worries! Good luck

One may get taller then the other, can train it down more with LST or SCROG style grow. can also raise the smaller plant up on a booster to make the canopy even if your not locked into the SCROG net. When I grew Maltezerz and Blue Cindy my one plant was taller but not to the point it would cause big issues. Autos for me don't get to crazy and I don't think your going to have to many issues with that. Good Luck!

High TeesTrees, No that is not a problem but the sativa strain will grow larger then the indica strain. So you have to train the sativa to become the same hight as the indica otherwise the indica is losing out on light from your lamp. The other thing is that the sativa strains take a few weeks longer from seed to harvest. So you want to prepare a place to dry your harvest because they will not be ready for harvest at the same time. Happy Growing! 😋