I get what you are saying, problem is when I have refilled the tank I have not added nutrients.
I've been topping off with PH balanced water that has CalMag, Silica Blast, and a couple drops of the Orca.
Up until the 14th the PPMs were staying steady around 650-680 so I assumed i must have found the correct nutrient level.
When I topped off the tank I added the water as I stated above which caused the PPMs to drop to 550. This was expected.
I figured when I would take my next reading that it would drop and continue to drop until I replenish the nutrients.
The problem is that's not what happened.
Instead of dropping the nutrient levels remained the same, now hovering around 550-570.
Also.. What is your thought process for waiting another week before switching to flower?
My original plan was to flip the light tomorrow. Do you think the SCROG still needs to fill in more?