Iâ??ve grown with HPS and LED side by sideâ?¦.the plants will grow towards the stronger light source, so not the best solution. If separated enough theyâ??ll mature at different rates.

More likely LED and CFL. If you want the benefit of both itâ??ll be a bit of a balancing act. In my mind easily do-able.

Yupâ?¦.Ventilation is a must. Where there is lightâ?¦.there will be heat, and the plants will need fresh air.

Good luck,
HMR