Ok, I got a hanna ph/ppm/ec meter and I want to make sure I read this right bc it seems like the numbers never stop computing. Am I suppose to record the number that shows when the timer disappears or am I suppose to record the number that shows after its slowed down after a min and a half? My aeroponics ? is if I get an aeroponics system, how do the seeds start since there's no rockwool or anything to stick them in? Thanks in advance for your expertise.