Question regarding PH run off

I currently have a Widow Bomb running 12/12 from seed; at week 4 from seed and flowering has just kicked in. Growing in Cana Coco using Hesi nutes.

I checked the run-off a few days back and its reading at 6.8, wtf! Only ever feed at levels between 5.6-5.8, this is my 4th plant and the first time Ive had this issue.

I noticed a few tiny orange spots on a couple of the fan leaves that looks like a calcium def; I assumed this was due to a PH lockout and so flushed her with 15 liters of PH water + CalMag yesterday. The pot she is in is 7.5 liters so I assumed this would be enough, however there is no change at all in the PH of the run-off!

Any suggestions? Do I just keep pushing water through her until the run-off is corrected?

PH in coco runoff will always be funny.

There is a way to test your coco pH but its not as simple as testing the runoff.

As long as its going in at the right pH don't worry about runoff pH.



J