I don't know for sure if it will harm them but, I remember reading and been
told that combining those things could sometimes harm the roots.
I have always been told to water with fertilizer, than at least one time
just water, than something else. Just always at least one time water with
nothing else, to clean te roots and medium, just in between the other
things.
"Barry" schreef in bericht
...
When I fertelize it's not uncommon for me to add in fungacide,
superthrive,
wisk or sometimes pesticides.

Wondering if this is common or if the mixtures could do harm or counteract
each other.