6.0-6.5 would be pretty good for Hydro but like already stated it is boarderline low for soil. When you can ditch those drops and get a real PH meter, makes things allot easier to read.
tinytoon Reviewed by tinytoon on . Yellowing leaves in early flowering. I have been growing for over a year now, but for some reason my last couple of crops have had issues with yellowing leaves and then a not so sweet taste/smell after harvest. Shortly after flowering starts the leaves will start to yellow and then slowly die, it seems to hit the larger older leaves first. I know my temps are a bit high (86 at the most), but I have worked with these temps since I started and this yellowing is a new issue. The harvest will also have a not so sweet taste and smell, Rating: 5