@Dipsett,ph up and ph down. Or baking soda for up and vinegar for down in emergencies if you ran out of ph up or ph down. She's hot here today, air cons on to keep my babies cool. Have a great night my friend.
Check out my purple glue diary. Not sure if you will have same results but mine but size could be issue. Good luck. Its decent smoke great flavor nice colouring at end.
Best tip I could give you is to keep that water cool. I ran chillers with my rdwc systems. FReezer packs if that's your only option.
I personally grew the biggest buds ever in rdwc but I found come drying time the amount of dry herb I was expecting to get was way under the weight I am use to getting from soiless ultramix HP. Same strain to. Now my rdwc the chillers the buckets, they all sit unused cuz I went back to soiless and the rock hard nuggies it produces. Much less work and headache at the end of the day.
Your plants look great so far. I am also at 6 week mark with my GG#4 from seed in soiless. My girls are now at 29, 27, 20 and 20 inches. Will be switching them over this week.