Royal Runtz - Tenth Farm

Hello Diary, The second week of vegetation is over. Royal Runtz Auto has grown 10cm in the last week and I am pleased with how it is growing. The brown dots I noticed on some of the leaves are obviously not from the drops when watering. I tried to detect some parasite but found nothing. As far as I can see, it didn't happen on other leaves, so it's a mystery to me for now. If anyone reading has any idea what this might be, I would be grateful if you could share it with me. Along with the Royal Runtz are also two Triple G Auto and all three plants are growing evenly which is great considering the position of the lights. Watering is not so frequent, every 4 days when I water them with about 1.5 liters of water to each plant. Of the watering supplements, I only add Easy Grow Booster tablets and p.H regulate with Plagron’s Lemon Kick. Here's what it looked like last week: 30/03/2022 - Day 9. Watering. I lowered the p.H of water to 6.1 and watered all three plants evenly with 6 liters of water. I also inserted one Easy Grow Booster tablet. The temperature of the water is about 20 degrees. Temp / Humidity on the farm - 24 degrees and 52% humidity. 03/04/2022 - Day 13. Watering. The procedure is the same as 4 days ago. p.H. was 6.0 this time. Temp / Humidity on the farm - 24.2 degrees and 51% humidity. 04/04/2022 - Day 14. Photographing and measuring plant height. Royal Runtz Auto - Day 14. - 24 cm Temp / Humidity on the farm - 24.1 degrees and 50% humidity. That was a summary this week, thank you all for your support and see you soon.