Yo! I can see the PH is 6.5!! if that is true the sadness you're seeing is because of that. Your plants aren't up-taking Phosphorus, Boron and Manganese effectively right now. For DWC in the early weeks you want the PH 5.5-6. PH is what determines what nutrients your plant can ingest. I always am successful running a DWC at a chemically measured, not electronic, 6.0 works very well for DWC, the entire grow. This chart will help you: https://imgur.com/e6WmmvV I also notice you are running lights not on 100% intensity?? The intensity of the LED lights is for when the flowering occurs, near the end, last 2 weeks or so, you want to turn intensity down which lowers light and temperatures to simulate Fall season coming in. Right now you want as much light as you can possibly get, use the spacing from the plant to the light to control the temperatures.. I see that around 28-30 degrees in veg with LED is ideal for good growth. Looking forward to seeing these take off! ๐
Just a tip mate, every time you pull those lids open for unnecessary shots of the roots you run the risk of exposing the environment to airborne pathogens that will ruin your system. Also, DWC plants do not get "water logged"... if you keep the water level 2cm from the bottom of the baskets you will never get root or stem rot. These white stands cannot be good for the environment, honestly is ridiculous. If it were me and I had 600 watts of light and my plants looked that bad at week 4... I would go to the store and buy 4 12L pots and enough good soil to fill them, plant your plants in there.. grow some fire weed. then do ALOT more research on DWC. You're overcomplicating everything with this setup, and causing problems with rookie errors. Check any of my diaries, ALL DWC, for daily updates, I am also growing the exact same FastBuds Gelato in a 20L DWC, and mine is day 27 and at least 5x as large as yours, I dont look at the roots every, only when I change out the entire pool for new sterile pool.. Not bragging at all, just wanting to educate you so you grow amazing hydro weed my brother! Good luck my friend! ๐๐๐ I will help you grow monsters.. I did 125 grams dry Gorilla Cookies in DWC, with a 100w LED, just hit 322 grams dry 1 plant, 300w LED, Big Bud Auto by FastBuds in DWC.