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Old 07-17-2010, 06:50 PM   #1 (permalink)
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Default pros and cons to DIY c02 injectors.

Im a few weeks out from starting my first planted tank and I was wondering if i should go with a DIY c02 set up or a pressurized one.
any tips would be great thx.
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Old 07-17-2010, 08:19 PM   #2 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

what size tank... diy ones are good up to 40 gal's i believe.
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Old 07-17-2010, 08:24 PM   #3 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

im starting a 10 gallon some ppl have told me i should do fine with out one but i kinda want to trick it out as much as i can.
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Old 07-17-2010, 08:33 PM   #4 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

this is the site i used when i had a planted tank.
DIY Yeast CO2 - The Planted Tank

only tip. Never use a clip or anything to Slow the flow into the tank. if there is too much pressure the bottle will explode and make a mess :(
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Old 07-17-2010, 08:57 PM   #5 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

sweet thx man. why would i need to slow the flow tho?
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Old 07-17-2010, 09:09 PM   #6 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

some people use bubble counters and try to slow the bubble rate witha controll valve or clip to like 1 or 2 bubbles per second. with a diy bottle the first day it starts kicking in, bubbles will be way faster than that. you will notice a ph change at night the co2 will drop your ph a bit and should go back close to normal during the Day.

here as a friend put it to me in a Email once.

Running an airstone will help keep CO2 levels the same as what is in the air around the tank (or rather, the pump). Bubbles and surface agitation create more surface area for gas exchange, which keeps the dissolved gas at the same concentrations as the surrounding air. This works well for low-light plants and somewhat well for mid-light plants, but usually doesn't provide enough CO2 for rapid growth of mid-light or high-light plants.
This is why surface agitation is actually bad if you have CO2 injection, as the gas exchange tries to even things out, dropping the CO2 to normal atmospheric levels.

I disagree that pH shift due to CO2 is inconsequential. pH shift is pH shift, and can be harmful to fish. kH shift is a matter of hardness, not pH, and is a different thing entirely (though it does limit the pH, generally). Many aquarium fish will tolerate such a shift, but some are extremely sensitive to it, and will not do well with a daily rollercoaster like that. If using injected CO2, it is a good idea to know the fish you are working with and whether or not they are tolerant of changes in pH.
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Old 07-17-2010, 09:30 PM   #7 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

I use a glass/ceramic diffuser to create fine co2 bubbles in my tank. Using the DIY method (2 liter bottle, 2 cups of sugar, 1/8 tsp of baking soda, about 1.5 liters of water and 1 tbsp yeast) the worst blow-out I've had has done little more than create a small popping sound -- nothing major like a BP spill.. I use a check valve so in case there is a blow-out (of the air hose attached to the pressurized 2 liter bottle) no aquarium water leaks out of the tank and on to my floors, as a result of siphoning..

Leo
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Old 07-18-2010, 02:27 PM   #8 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

can you make your own diffuser? or can i buy one?
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Old 07-18-2010, 04:38 PM   #9 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

A good fish store near you should sell them. And like all things related to the DIY co2 method, they're cheap. I also bought two online. One I bought from Hong Kong; the other came to me via Registered Mail from Singapore. Each cost something like $5 or $6 w/free shipping. If no store near you sells them, you can order them online through ebay. Search for 'co2 diffusers' and you're bound to get a long list. The wait time for mail deliveries however is something like 2 weeks.
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Old 07-18-2010, 06:13 PM   #10 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

ok thank you for the info!
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Old 07-19-2010, 07:57 AM   #11 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

I run DIY on all my 10s. You could do pressurized if you wanted to spend the extra money on it. If so, I would look into the paint ball tanks. May be a better fit for the smaller tank.

I haven't had any issues with any of my bottles and I run the nano ceramic diffusers on all of them.

As for DIY diffusers...you have a couple of options but won't yield the same results as a regular diffuser. Those being chop sticks and cigarette filters (I haven't used these so can't comment on them). For the cig filters, only use the ones that you would buy from a place that you can roll your own.

Or...check with your LFS. Some of them will carry limewood diffusers. These work well too.
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Old 07-19-2010, 10:22 AM   #12 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

ok do you have a link that has the DIY paint ball tank set up?
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Old 07-23-2010, 08:52 AM   #13 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

Why not these for your 10 gallon. The Hagen CO2 Natural Plant System is a nice and easy system to use. This is how I started out with. It's good for up to 20 gallons.

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Old 07-23-2010, 09:13 AM   #14 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

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Originally Posted by TylerT View Post
ok do you have a link that has the DIY paint ball tank set up?
My apologies...I thought I had responded to this already.

The paintball system isn't DIY. It is a complete pressurized unit. Here's a link that shows the equipment:

Red Sea CO2 Pro System (Paintball)

You could do the Hagen CO2 Natural Plant System as Big Dog mentioned....but....I would recommend doing the DIY CO2. More cost effective and lasts longer. The Hagan could be a good starter if you're just getting into it.

Here's a link for a DIY CO2 method:
DIY CO2 Made Easy
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Old 07-23-2010, 09:21 AM   #15 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

You can use the same mixture as you do the DIY pop bottle. It looks much nicer next to yourr aquarium. It all comes down to what you like and how much you want to spend. Good luck.

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Old 07-23-2010, 09:36 AM   #16 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

Quote:
Originally Posted by Big Dog View Post
It all comes down to what you like and how much you want to spend.
Exactly
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Old 08-04-2010, 06:54 PM   #17 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

I am using this DIY co2 system
Manage your freshwaterautolinker.com autolinking image aquarium, tropical fishes and plants: Do It Yourself Carbon Dioxide Injection
I have tried many recipes, but i think is is the best, 1 bubble per second for 3 weeks.
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Old 08-04-2010, 10:20 PM   #18 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

i picked up a hagen system with a bubble latter...and when the mix that comes with it is done i can just use the sugar and yeast method right?
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Old 08-05-2010, 05:16 AM   #19 (permalink)
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Default Re: pros and cons to DIY c02 injectors.

you can use the mix that comes with the hagen system or you can use the sugar and yeast recipe
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