He meant you could start nutes anytime I don't think he meant flush. Were ya reb ?? Flushing is to clear out any built up salts and leftover nutes. I've never used there nutes but I here they work pretty good. Your ph is actually not that bad. Just raise the ph of your water to 7.0 and see what happens. Do you have a good cal/mag supplement? You will need it with ffof.
Exactly what I mean JasL! Sorry for confusing you Zeeker. Basically start Grow nutes soon as they show sex, give grow nutes every other watering (example, Feed, pH'd water, Feed, pH'd water, etc.) stop Grow Nutes and begin Bloom Nutes when vertical growth stops. Then 2 weeks before harvest start Flushing. Meaning straight pH'd water, until they finish. If you over feed them you can flush them to help "flush" out too much nutes. That's the only other time you would Flush you plants other than 2 weeks to harvest time. Like JasL said... To flush out the excess salts that build up. If you don't your buds won't burn right, if at all. By the way great guidance JasL +rep to you man!!
Start at 1/4 dose and creep up as you go along. To see how much they can handle. Like Sniper said... take it easy at first. You burn/stunt your plants you are stuck with what you got. Autos don't have that recovery time like Photos do since you can't control how long you veg an Auto. Always keep in mind the start of an Auto is the MOST important time of it's life. Best start gives you the best growth and yield.
82F is fine and the more light the better off you are. Keep those 10 lights blasting down on those babies.
Keep as much lights on them as possible... I would KILL for 82F! Hell mine run at 90F all day/night long!(I wouldn't recommend it but you can get away with it) Get some good fan(s), air circulation is key! You can get away with higher temps if you have good air circulation. Again I wouldn't recommend it (high temps) but my point is 82F is just FINE. Get them lights back in there!
Your gonna start flower nutes around week 6 or 7 when you see vertical growth stop. If you have height restrictions or you want them to finish earlier you can start earlier.
You can do try that but it's never worked for me. I've given bloom nutes early to try and force bloom and IMO the only way to control height in Autos is LST... Forgive me if this has worked for you JasL... Just hasn't for me... :smokebuds:
Hope all this helps you some Zeeker and hasn't confused you again... I apologize if I'm not explaining things well...