RQS Royal Jack Automatic first grow

Day 36 (11/04/2024): The right plant finally entered the flower stage (therefore there's delay in flowering of around 10 days between the plants). Removed the yellow leaf which was touching the soil as the result of LTS from the right plant. Watered the plants using pre-made mixture (4.5 L of fresh tap water, 1/2 tablet of RQS Easy Grow), adding around 1 ml / l of Silica and bringing pH to about 6.5 pH. Gave 300 ml to the left plant and 1225 ml to the right plant. Even after this the left plant still showed some mild symptoms of overwatering. I guess partly it has something to do with poor drainage and aeration due to plastic pot material. However, just as an experiment, I will try to extend the time between watering it. The right plant has also shown some mild overwatering symptoms later. Day 37 (12/04/2024): Plants look fine. Removed dead rotten leaf from the bottom of the left plant. Day 38 (13/04/2024): The exhaust fan was set to turn on on 66% RH to keep the RH around 65%. The right plant started doing a flower stretch, so I had to slightly raise the light so it would be 30 cm from it's top. I am also planning a light defoliation of the bottom leaves tomorrow or on Monday. Late evening the left plant started showing extremely strong underwatering symptoms, with droopy and yellowing leaves with dry texture. The soil was also extremely sandy and dry. I decided to immediately give the plant 50 ml of water pH'd to 6.5 pH. Day 39 (14/04/2024): The right plant also started to show some symptoms of some deficiency, with some leaves on the bottom turning yellow. Did some light defoliation, removing dead and dying leaves from the bottom of both plants. Also removed two very small bottom branches with underdeveloped bud sites in the shadow from the left plant. Removed LST clips and ties from the right plant. Watered the plants using pre-made mixture (4.5 L of fresh tap water, 1/2 tablet of RQS Easy Grow), adding around 1 ml / l of Silica and bringing pH to about 6.5 pH. Gave 350 ml to the left plant and 1050 ml to the right plant. After that the plans did non show any visible symptoms of overwatering, for the first time in a while. Day 40 (15/04/2024): Had to raise the light slightly so it would be 30 cm from the tip of the right plant, which has reached 50 cm by now. The right plant is looking healthy, while the left plant now actively showing some sort of deficiency with yellowing leaves on the bottom of the plant. Day 41 (16/04/2024): Had to raise the light slightly so it would be 30 cm from the tip of the right plant, which has reached 55 cm by now. The exhaust fan was set to turn on on 65% RH to keep the RH around 64%. The oscillating fan was turned up to the setting previous to the max to create more air movement, as it was not felt on the level of the bottom leaves. Day 42 (17/04/2024): Had to raise the light slightly so it would be 30 cm from the tip of the right plant, which has reached 60 cm by now. Preparing the new watering mixture using 3.2 L of dechlorinated tap water and 1/2 tablets of Easy Bloom. No silica, as the mixture pH was already 6.5 pH. Watered the plants, giving 350 ml to the left plant and 1050 ml to the right plant. They didn't show any signs of overwatering. Removed two dead leaves from the bottom of the left plant and one from the bottom of the right plant. Removed one very small and undeveloped shadowed bud side from the very bottom of the left plant.