How much co2?
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Old 02-16-2013, 02:17 AM   #1
Chris.d514
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How much co2?


I have a 6 gallon nano and just got a Hagen 20g co2 kit with bubble checker. I'm at 1 bubble every 2 min just wondering if that's enough or too much.
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Old 02-16-2013, 02:20 AM   #2
dudebro
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Default How much co2?

I run about one per second with 9 gals and medium lights. It's also on the timer with the lights. I think you may be fine. Watch your fish though until your sure about it all.
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Old 02-16-2013, 03:23 AM   #3
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Originally Posted by Chris.d514 View Post
I have a 6 gallon nano and just got a Hagen 20g co2 kit with bubble checker. I'm at 1 bubble every 2 min just wondering if that's enough or too much.
1 bubble per two minutes is very low; are you using the Hagen DIY CO2 (with yeast and sugar) kit? If so, I would first check for leaks, and then if you are absolutely sure there are no leaks (double check), then it might be because you used water that was too hot and killed off the yeast.
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A Primer to Pressurized CO2 and A Primer to Planted Tanks
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Old 02-16-2013, 03:24 AM   #4
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Default How much co2?

It is the kit that uses 20g co2 bottles.
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Old 02-16-2013, 05:02 AM   #5
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It is the kit that uses 20g co2 bottles.
If you are using the pressurized cartridges and you are only getting 1 bubble every 2 minutes, you definitely have a leak somewhere (check all your connections with soapy water).
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A Primer to Pressurized CO2 and A Primer to Planted Tanks
Eheim Pimp #362 - Eheim 2213 x2, Eheim 2028, Eheim 2217, Eheim surface skimmer and Eheim autofeeder.
Victor Pimp #33 - HPT272-125-350-4M
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Old 02-16-2013, 05:04 AM   #6
Chris.d514
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Default How much co2?

I have the regulator barely open I can increase but unsure where to be.
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Old 02-16-2013, 08:07 AM   #7
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I have the regulator barely open I can increase but unsure where to be.
You can slowly increase your CO2 rate and monitor your livestock with each increase. For a 6 gallon, 1 bubble every 3-4 seconds is probably a good rate. I used to run ~1 bubble every 3 seconds on my ADA Mini-S (~3 gallons).

Your diffusion method is also important; you could have a much higher bubble rate, but with poor diffusion, not much CO2 will make it into the water column.

Finally, if you use a drop checker with a 4 dkH reference solution, you can also ballpark the amount of CO2 that is being dissolved into the water column.
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A Primer to Pressurized CO2 and A Primer to Planted Tanks
Eheim Pimp #362 - Eheim 2213 x2, Eheim 2028, Eheim 2217, Eheim surface skimmer and Eheim autofeeder.
Victor Pimp #33 - HPT272-125-350-4M
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Old 02-19-2013, 05:46 PM   #8
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Default How much co2?

I'm up to a bubble every 5 sec and it seems to be going good.
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Old 02-20-2013, 04:34 AM   #9
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Check valve may be in backwards.

Mine wasn't marked, and I had my system CRANKED... and barely any output.

Soapy water, spray bottle... nada.

Flipped the Check Valve.... WOOOOOOOSSSSSSSSHHHHHHH!!!!

Ran to the Needle valve, clamped it shut, re-adjusted, all good.




-Ken
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