[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[APD] Re: CO2 off at night

I feel the same as you...LoL, I've been lurking for a while, and I just can't seem to keep up with almost everything we talk...it seems that I need to have a chemsitry degree...anyway, I don't mean to offend anyone with this, but I really think that sometimes, we just overmanage our tanks...lol.
I really respect people who are willing to do them, and are so passionate, I actually envy them..

Date: Thu, 11 Sep 2003 08:28:43 -0600
From: gbooth at frii_com
Subject: [APD] Re: CO2 off at night
To: aquatic-plants at actwin_com

My goodness, what a barrage. Here are some IMHO comments. 

Why do we all of a sudden think "20-30 ppm" of CO2 is a good range? I've been 
using a maximum of 15 ppm since 1987 with more than enough plant growth. Or 
does that go along with "4-5 w/g" of light? People, people, people, more is NOT 
better. All things in moderation. 

Perhaps our fish are more sensitive to higher levels of CO2 since we are at 
higher altitude (5000 ft). There is less O2 at "saturation" than at sea level. 
We notice our discus become stressed if the CO2 is over 20 ppm. Your results 
may vary.

Why all the fuss over turning on filters and adding airstones at night? You 
should have good water circulation _all_ the time. With good water circulation, 
O2 diffusing into the surface water gets mixed throughout the tank and you 
_never_ have an O2 problem. O2 is at the water surface morning, noon and night. 
All you have to do is circulate it. 

BTW, airstones are not very efficient at getting O2 into the water other than 
the fact that the rising bubbles create some circulation. Why have than darn 
airpump humming all night? 

As for running CO2 24x7, I've always done it. Why? If the CO2 is off at night 
most will diffuse out of the water by the morning. If you turn on the CO2 when 
the lights come on, it will take a while for it to build up to useful levels 
and photosynthesis will be hindered in the meantime. And if you have the CO2 
running extra hard to make up for this, you are asking for trouble. If you want 

=== message truncated ===

Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com