First Grow Cookies Gelato Auto and Sweet Zz Auto

Today is day 28 of my grow. The past week of gardening has been real fun. I am really loving my new hobby so far. SweetZz 1 is definitly transitioning to flowering stageand SweetZz 2 seems to follow her big sister slowly. The Gelato plants are way into veg-phase and the growth sped up in comparison to the first few weeks. I started the week with some LST on Cookies Gelato 2. I also decided to increase the light intensity of my LED to around 50% and to start feeding all five plants with half of the recommended dosage from the BioBizz feeding shedule. I am watering every 3 days with 2l of water and I am feeding them every second watering. Over the week I did some defoliation on all plants when I felt that the leaves were blocking potential bud sites. While the SweetZz 1 was growing and stretching crazy this week (roundabout 55cm tall now) all other plants are only 20cm tall. So I decided to buy some buckets on day 27 bringing all canopys of my plants to the same level. During this process I repositioned my LED to sit 40cm above the canopys and increased the light intensity to 65%. I measured circa 35.000-40.000 LUX right above my plants. I don’t really know how far I should position my LED above the canopys of my plants and what the ideal light intensity would be at the moment, so if anybody could point me in the right direction I would really appreciate it. (I am growing under an Caluma force 320W LED if that helps) Thank you for reading and happy growing everybody.