Re: Response time of your CO2 reactors
jippalbert, I'm currently testing it (2"x12" external reactor driven by a maxi-jet 900 (225gph) and uses it to "on"/"off" the CO2 instead of a solenoid) and haven't got the results yet...
Tom's setup is hooked up with his light timer so I guess the CO2 comes on with the light. He gets a response time of an hour or so from ambient levels and maintains it throughout the day (~30ppm).
Are you able to hit 30ppm (max) with your particular bubble rate and maintain it throughout the day? A 0.0-0.2 pH difference should be good enough I guess but you should hit max CO2 level within an hour as the plants are still half-awake..
after the lights come on.
Regards
Peter Gwee