Stuck with DIY co2
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Old 04-07-2013, 10:50 PM   #1
jameshill247
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Stuck with DIY co2


So I get the basics on how to actually make the co2 reactor and either gonna buy a diffuser or use the chopstick or cigarette filter method for a while.

But.... I do run an airstone in my tank for the benefit of the fish

The tank for me is more about the fish than the plants but I would like the plants to be in better condition and grow faster etc so I'm thinking DIY co2 to start. Will the airstone running cancel out the co2 I'm producing? Is it normal to run both?

And as far as Turning the co2 off at night I have been reading that people run an airstone at night to avoid gassing

The tank is just under 200 litres and I'm thinking a 2ltr bottle

Is there any benefit to using 2 1 Ltr bottles instead of the single bottle as some designs use 2 some use 1 ?
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Old 04-07-2013, 11:18 PM   #2
res34
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Keep the airstone off during the day and only have it on at night. As plants only absorb oxygen during the night, this will prevent your fish from suffocating due to deoxygenated water. CO2 is also unnecessary at night because of this.
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Old 04-07-2013, 11:21 PM   #3
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Ah I see

If I wanted to keep the air on all times as I like the look of the airstone I run it under my driftwood would I be wasting all the co2?
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Old 04-07-2013, 11:48 PM   #4
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I believe the aeration will cause the CO2 to exit the water. It's better to only put it on at night, when it's necessary. You could always just keep it on in the early morning/later afternoon if you want to watch it.
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Old 04-07-2013, 11:59 PM   #5
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Yeah spose I'm at work most of the day anyway

Wonder how turning the air down but not completely off would effect it

Guess it's gonna depend on the level of co2 in the the tank any ideas on
A healthy bubble per min for a 200ltr
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Old 04-08-2013, 04:50 AM   #6
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Having increased surface agitation will increase the surface area of your water, and subsequently, the rate at which CO2 diffuses out from your water.

This is why it is recommended that you have the air pump off if you intend to be injecting CO2. However, even if you keep the air pump on, you can compensate for the increased loss of CO2 by injecting more (it just means you will require more bottles).

As for the bubble rate, there are too many dependent factors (such as method of diffusion, whether you intend to use your air pump or not, etc).
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Old 04-08-2013, 06:54 AM   #7
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That makes sense so I think it's gonna be test and see what works and what doesn't

Really haven't bothered too much with plants before never really had much luck with them but this time they are doing a lot better then before

How long would you think it would take to see any changes in the plants with DIY and do I still dose the food?
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Old 04-08-2013, 08:17 AM   #8
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Quote:
Originally Posted by jameshill247 View Post
How long would you think it would take to see any changes in the plants with DIY and do I still dose the food?
As with any deficiency, plants can take 2-3 weeks to adjust to new parameters, so I would give them at least that much time.

As for "food," are you referring to fertilizers? If so, yes, you should add them (though how much and how often is dependent on your lighting).
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Old 04-08-2013, 01:20 PM   #9
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Okay thanks I will just take a photo before and compare it in a couple of weeks and see if its helping
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