Perfect Timings

Hi all, i been looking through this site for quite a long time now throughout all of my grow, but im dying to ask a question so i figure why not just become a member you all give great help, anyways my question is, i have 5 Under a 600w HPS in a closet, "Northern Bright"
and well 2 of them are a little over 3 feet, the other 3 are close to 2, and i recently put them on 12 12, but recently i had accidently hit the program button on the timer and ended up falling asleep while the light turned on for a little over a hour at 92 degrees ,
so the question would be, does it have to be Perfect exact timing? does this affect flowering in a way that i should know about?, i cant seem to make a perfect 12 12, more like 11:50-12, lol or in tonights case 11-12, also the biggest one "id love to put pics but cant" has alot of the bottom fan leaves constantly drooping, and alot tend to just die off, while the entire way up looks healthy as can be, i ruled out watering already, i only use 5-5-1 or 1.5-4-5 are these to weak? Also they been on "12-12" since the 10'th so not long ago, Thank you all

Doesnt have to be exact. Exact 12/12 is ideal, but a few minutes (or even an hour off) wont affect your plants negatively.

Thank you senor

ps: sublime rocks

nah not really. my timer is abit weird as well, i cant get 12 hours exactly. i think mine are set to 12:15 / 12:15. but ive been a few hours out once or twice. it should be a prob

they yellow from bottom to top when flowering, more so last two weeks when stopped feeding, 5-5-5 10-10-10 u just use more 5-5-5 than u would 10- 10 -10 so no dont matter. did i make ne sense,best of m8.

del66666 said:

they yellow from bottom to top when flowering, more so last two weeks when stopped feeding, 5-5-5 10-10-10 u just use more 5-5-5 than u would 10- 10 -10 so no dont matter. did i make ne sense,best of m8.

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yeah you made sense, thank you. its actually been doing this while in veg to, i heard it was normal for bottom leaves to die, but they actually die on me quite a bit, i figure it could have to do with using a HPS the entire way through?. different spectrums?. this is my first time and im just of course hopin for the best. got temps to also stay around 83 when lights on, about 74 when off, so im not thinking its heat either, i use only distilled water, i give each about a gallon maybe a little more every 3 days "or they flop", air purifiers, clean space, Supersoil is what im using , but yet the bottom seems to have done this its entire life span. so im not sure what it is. i also use a drop or 2 of superthrive here and there on them, but not much . thanks