Tolerance to small light difference during flowering

First indoor grow here. I've had my mini Apollo 13 under 24/0 for about 8 weeks, lst'd to make it essentially horizontal for a stealth 1' 1/2ft x 2ft x 4ft box. Today was 2 months, and I've decided to put her(knock on wood) into flower for her 2 month birthday. But, I've been waiting on an order for a timer for the 12/12 schedule but it has been denied, and I can't keep vegging. So here is the solution I have. I already have a toggle switch to turn the lights on/off (100w cfl btw), and I turned the lights off last night at 10:00pm. I set two alarms on my phone, one for 10am and 10pm, to remind me to turn the lights on/off at those times. I am almost always available at those times, which is why I set it for those times. A lot of work that can be solved by a timer, I know, but for now this is the only solution I have. So my question is, if I check my phone 10, 15, 20 minutes late, will the plant not really care about the light difference? Will an occasional 11 1/2hr on/12 1/2off really stress the plant? Since the plant generally prefers dark periods during flowering, I would think this wouldn't be a problem. This seems to be a pretty stable strain from what I have read, but I don't want it to go hermie on me. Any input would be appreciated,
Peace
stealth

No....That little amount of time will not effect it.....
Good luck

Little variances are not going to be a big deal if you are generally consistent, but this is always easier said than done. Get a $10 timer, worth every penny. A timer will ensure proper photoperiods, but will also save time and contribute to your stealth approach..

tiger mt. said:

Little variances are not going to be a big deal if you are generally consistent, but this is always easier said than done. Get a $10 timer, worth every penny. A timer will ensure proper photoperiods, but will also save time and contribute to your stealth approach..

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yessir wish me luck and pray for those pistils!