I would use tap water at 100% strength....no nutes.
If you are adding nutes to the water and they aren't getting to the plant due to PH locking out etc...then when you fix the PH the plant will get an overdose of nutes.

Flush with ONLY water 3 times the volume of the pot.
Test the runoff with PH strips.

Post findings along with the nutrients you are using etc from the form..

How'd I do stinky?