Unknown Strain - Deep Water Culture DWC

Today, 14/02/2022, she is 21 days old and I took the opportunity to clean the reservoir. Then I added the new solution with PH 6.3 EC 0.9 + 30ml of pharmacy hydrogen peroxide. My duct arrived and I already installed it, it went down from 31º to 27º, I am very satisfied. I spent 36 in 1m of 125mm duct, already with shipping. I believe that the heat has interfered with her initial development, but I am still very satisfied, until flowering the temperature will be much lower.