We are having our first pool installed tomorrow! We priced in-ground pools, but it was just not worth the money (to us). With a good quality above-ground and a nice deck off the house around the pool, the look is similar for about 30% of the cost.
Onset of effects occurs within 30-60 minutes after taking Concerta. After that, duration of action lasts from 8-12 hours. And the average times to reach peak plasma concentrations across all doses of Concerta occur between 6-10 hours. The average half-life for Concerta in adults is about 3.5 hours.
Re: concerta how long to take effect. I'm on 36mg twice a day. Assuming you don't have a placebo effect, at the dose you're on, I wouldn't expect you to be aware of any difference in your vitals or conscious state, other than possibly noticing a subtle ability to focus more on tasks for longer periods of time.