dont worry about flushing its not needed,
also your watering all depends on how much your plants drink,
the bigger and more foiliage they have the more water they need,
if they droop a lil between waterings then they are gettin a lil dry,
i got an og flowering right now that i water heavily one day then the following day give a lil water to,
so it gets watered at least a tiny bit everyday
goodluck with your grow looks great so far
To each they're own, I disagree with this method. I water
vigorously, then wait till the pot weighs next to nothing, or when leaves droop, usually within 2-4 days. Lately every 3rd day seems perfect. Every strain is different. Back to the flush thing,
DONT! I don't know who put this in your head but is not a logical thing to do at this point. Stay with us and you'll do fine. Everyone thinks they know something about something, but in fact they don't know anything at all, keep this operation quiet and only your hands touch this grow, forget everyone else, for yours and your plants safety.
(I'm very high hope this ramble made sense)