First Time DWC Hydro Blue Dream Nirvana

well. starting in hydro is slow af BUT: once everything is dialed in and the roots can hit the water growth is EXPLODING. look at all those super fucking healthy strong roots! (even tho they look a bit dark on the pictures, they are 100% white and super healthy. So the ~100€ DIY Water cooler really worked well. much better than i expected. water is constantly in the range of 19-20°C air temperature is max 30°C but mostly 27-29,5°C and humidity is 60-75% and thats just perfect. Water holds most oxygen at 20°C most photosynthesis efficiency at 30°C BUT humidity needs to be a bit higher so the VPD is right. on 30°C i need 80-85% humidity for perfect vpd and i thinks thats managable. plant looks wonderful anyway. more updates in some days, cheers.