well i cut off right away as long as you can still have 50% or so of ur baby's leaves left.
as to ur misters....i dont recall if u mean the feeding mechanism?? U should always feed the roots. but if you mean foilar feeding...I would suggest not doing it if fungus is a problem...unless an emergency feeding is required
I hear these guys foilar feeding 5 times a day!!! They dont live in the desert where all the fungus is secretly waiting to explode as soon as water shows up...good luck man