I dose macros and Equilibrium right after WC and micros the morning after.
As to EI paradigm the purpose of WC is to reset nutrients level in a tank. So you have to do two things: 1) replace 50-70% of water; 2) add nutrients to some known level.

Plus, as Hoppy mentioned, what good does for a plant a day with nutrient levels lower than usual? I can envisage scenarios where it can be in fact relatively bad.

Regards.

Vladimir.