Dude just don't let your temps get below 65 degrees, or over 80. You've got a 15 degree window for optimum growth in there. Outside of that growth starts to slow down fast! Unless, of course, you have CO2 running, in which case your temps can get higher and your safe.
As well, some people do feed every time they water, but adjust their nutes accordingly to water with a more diluted solution. It just depends on how you like to do it. Do you wanna mix nutes each time, or do you want to be able to just dial in your ph and go for it every once in awhile.
edit: Wow, I'm a fucking idiot. Just replied to a post you made ages ago. I musta been high and on the first fookin' page ffs