Do you need to Run a air Stone when the Co2 & Lights are off at night - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 01-04-2014, 04:51 PM Thread Starter
Algae Grower
 
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Do you need to Run a air Stone when the Co2 & Lights are off at night

I have a 100 G with injected Co2 and a little confused on this.
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post #2 of 5 (permalink) Old 01-04-2014, 05:37 PM
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If you have a little surface ripple you do not need to run one. Most people that run one at night do so because they are not turning off their CO2 and the plants are not in-taking it, so it keeps a good gas exchange going so as not to let the CO2 build up in the water column.
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post #3 of 5 (permalink) Old 01-04-2014, 05:52 PM
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My CO2 runs from an hour before the lights come on and goes off an hour before the lights go off. It will also go off when the pH hits 6.50 for 30 min as that keeps it within the 1 point swing. Anytime my CO2 goes off my Apex will turn my air pump on raising the pH. IME I have found this allows me to inject more CO2 and longer and still keeping the fish happy. If I go any lower than 6.50 they get stressed and start gasping for air. It took a few weeks to get this dialed in and play with it.


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post #4 of 5 (permalink) Old 01-04-2014, 06:07 PM
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simple answer. no, you don't have to. I do not, nor do very many.

the key, as Tzac has pointed out, is to have a lot of surface agitation w/o breaking the surface. lots of ripples, no splashing.


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post #5 of 5 (permalink) Old 01-04-2014, 07:41 PM Thread Starter
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Yes I have two spray Bars so The surface has plenty of Ripples ...thanks all
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