Can i premix floranova grow?

first time grower here... i'm starting the third week of veg from seeds and im getting ready to start using floranova grow at 2.5mil/gal every third watering
can i premix my floranova grow with water and use it as i need it or do i need to mix it each time i feed? from what i can tell on the feed chart it just says do not premix nutrients, which i assume means during the transition period when youre supposed to use floranova bloom together with the floranova grow. i think i have a good grasp on the ratios and schedule... its just the little details like this where the devil hides

it is the best stuff ever! i have used it in promix for a couple years,flora nova is very forgiving and its hard to fuck it up...shake the bottle very very well before use.do u have a ppm meter?you should invest in a ppm meter,a ph pen and some ph up and down.

nope i do not... thought about getting one of these though: http://www.lowes.com/pd_214248-83666-1210_0__?productId=3024638&Ntt=soil+test+kit&pl=1&currentURL=%2Fpl__0__s%3FNtt%3Dsoil%2Btest%2Bkit&facetInfo=
and i was going to go off this basically for feeding schedule: http://generalhydroponics.com/site/gh/docs/feeding_sched/GH-FloraNova-DTW-Charts.pdf
looks to me like im NOT supposed to mix it with the water til BEFORE each feeding?
and thanks for the prompt response...

weell the thing is that all water sources are different some the ppm or ec level are real low,where i am i have to use ro because the ppm of my water is 600-700 and i cant put too much nutrient in cause the ppms will be too high and it will fuck up my plants.and a ppm meter makes it sooo much easier to figure this out.an extremely valuable tool,so is the ph pen!!!!!i wouldnt grow without them both!

na dude never pre-mix base nute concentrates. add them seperately to water then stir them in together

i never said to premix,i know thats a bad thing...i said PROMIX!!!

lol... so im still not clear... maybe i didnt ask right or was stoned or somethin, BUT...
i basically just need to know if i can mix the floranova grow with the water, use some of it today, some of it in, say, a week, if i alternate nute, water, nute, water, etc..... can i let it sit already mixed in a jug and use it as i need it or do i have to mix it just before feeding each time seperately?
WHEW!
thanks again for the help all

i would highly recommend u dont...the stuff goes a long way anyways