RQS Green Gelato 2nd run, DWC

This week is totally hard days for my little girl. I tried to solve the pH problem, it reaches a pH of 8.0 in one day. First, I tried to find what is not good. I tried only to use nutrients (hydro A and B) with the Lemon kick (citric acid). This has also a big pH shift. I tried to use pH- grow by CANNA. This makes less pH shift and one or two days later it makes a more stable pH (not reaching to 8.0, but still go around 7.0). Some articles say the plant loves the organic acids like the citric acid. It helps the metabolism of the plant and usually is no problem for using soil. But for hydroculture, the plant very easily absorbs the organic acids and make water pH increasing very fast. I decided to use pH- grow by CANNA. But, it makes the EC high. I will try another pH down stuff. Also, heat stress is still on my girl. New leaves have def of Fe and heat stress. Now pH is not so bad. Thus def of Fe is being cured now (it comes high pH). But still, heat heat heat. I checked a forecast, the temperature will reach 36 today. But next week it will be lower than 30. I wish autumn is near. TIL For hydroponic, the organic acid is not so good for adjusting the pH level of solution. Because the plant loves organic acid and absorbs very fast. Log I forget the details which day I did what. Logging only last change in this week. Aug 10: Change all solution with the above condition. Every day I added 10 ml (1 ml / l) of CANNA pH- grow. EC is reaching 1.3 after two days.