No i wasn't adding water untill today I added 3 gallons of water. Room temp is around 75 low humidity...Plants are around 8 inches tall 5th week. I have good water were I live But I still let it sit for 24 hrs.. to evap any chlorine. looks like nutes were getting to concetrated..I had a plant still in soil the same hight as the ones in hydro and it was fine and still is so not the light ....thank you for the info on adding water....How often do i add water? Daily?When do I change solution weekly or bi weekly?