No it isnt....just a fyi that ppm numbers can mean different things to different meters. Sounds to me like yours reads at a different conversion than Rhiz.

Usually when plants burn they droop and get somewhat curly looking get very soft feeling and then dry up, and turn brown. Hopefully you will see that plant going back the other way now so keep an close eye on them.

PS...if you don't see them start to improve I would consider dropping your ppm number back even more.
Weedhound Reviewed by Weedhound on . Sad, Sad Plants I have six plants that are 30 days into flower and two of them are extremely droopy with their leaves sagging. I have no idea what happened. I didn't add anything to the res but I did change it on Thursday night which was the first night after the first one started drooping. The only difference in my methods has been the addition of CalMag at half strength and I also got some Sweet that I start using Friday at 50%. The first one that got droopy looked like a plant you would see in a Rating: 5