We are using 120*120*200 tent with 600w HPS lighti...

Es kommt drauf an welche Töpfe du verwenden willst.. Wenn die Töpfe ca. 20 Liter groß sind würde ich es mit 4 versuchen da diese dann auch ordentlich groß werden können.. Wenn du 11Liter Töpfe nimmst kannst du auch 8 Pflanzen unterbringen.. Da man Autos nicht wirklich trainieren kann muss man es austesten wie es wird. Ich würde zum Anfang einen 11 Liter Topf nehmen mit 4 Pflanzen und wenn man sieht das noch genug Platz ist entweder Größere Töpfe oder mehr Pflanzen oder auch beides.. Das muss man testen

Hi @blackhole! It's all about the techniques you plan to use. For instance, in a SOG setup (Sea Of Green), you want the maximum plants in the minimum space, since you will remove all side stems and let the plants grow vertically as fast as possible. If you rather like to mainline your plants, 2 or 3 big mainlined plants will fill your room. If you plan a long SCROG you can have only 1 plant in the tent, with weeks of training to make a monster over the scrog net. Remember the more plants the more daily work you will have, and you better not work in an overcrowded environment, that leads to multiple issues such as lack of air, high relative humidity in flowering, or plants fighting for space/light. Hope this will help, keep us updated and happy growing! 👊

Yes you can plant feminised with autos but you will have to do it at the right time to be able to put the photoperiodic strains into flowering as soon as your auto are ready. If you want 1 month of vegetation for them then put them inside 1 month before your auto harvest but it will be hard to manage a flowering canopy and a vegetative one in the same tent with space restriction , the main issue could be the shade create by the autos canopy on the photo canopy. Now about the number of plants it depends on a lot of things but the pot size is the most important for the autos because once the roots are well settled the plant goes into flowering ; you can grow something like 32 plants into 3L pots ( SOG ) or 6 in 40L pot , it is really depending on you , your needs , your space , the amount of plant you are allowed to grow ( or you want to grow ) , the strain ( sativa will get bigger )

I'm growing a similar set up and what i figured out for maximum yield is perpetual grow. This means i put in a new plant every week or so, but i only use fast flowering auto's. It gives a slightly bigger yield because you can put the bigger flowering plants on the best spots in your tent. I can put 9 plants in my tent and they finish in about 9 weeks. So this is how i organized my grow. Hope this is usefull