turning CO2 off at nights

• To: Aquatic-Plants at actwin_com
• Subject: turning CO2 off at nights
• From: George Booth <booth at hpmtlgb1_lvld.hp.com>
• Date: Fri, 02 Jun 1995 08:32:25 -0600
• In-Reply-To: Your message of "Fri, 02 Jun 1995 03:39:04 EDT." <199506020739.DAA27210 at looney_actwin.com>

> From: Harold Wong <hgw at math_ucla.edu>
> 
> It has been suggested that CO2 injection should be turned off
> at nights since plants do not need it at the time. Wouldn't
> this cause a sudden PH changes twice a day? Thanks.

You will have some pH changes in a 24 hour cycle without a pH
controller no matter what you do.  However, as you have correctly
surmised, letting the CO2 run constantly will create smaller changes. 
IMHO. 

George

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