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Cliff
08-08-2010, 10:09 PM
I just put together and started using my first DIY CO2 system this weekend. I took the best parts of other DIY systems that I found when making mine (diagram & pics below). Here’s how I did it:

A) Took two 2 litre pop bottles and drilled a hole in the caps for the air lines. I drilled the holes a little smaller than the air line to get a tight fit
B) I then took a juice bottle with a large cap and drill two holes in the cap for air lines.
C) Ran a 18” length of air hose into each pop bottle cap, only going leaving about one inch of length on the inside of the cap. I put some aquarium safe silicon around the connection.
D) Next I ran a 12 inch length of air hose in to one of the holes of the juice bottle so there was only 1 inch of length on the inside. I connected this air hose with the two hoses from the pop bottles with a T connector.
E) in the other hole in the juice bottle I ran another hose about 24 inches into the second hole in the juice bottle cap (only one inch on the inside) and sealed both hoses to the cap with aquarium safe silicone. The hose in the pic looks longer because I trimmed it afterwords.
F) I placed a one-way check valve on the hose coming out of the juice bottle and then connected it to the bubble counter in the tank

The purpose of the juice bottle was to prevent any of the CO2 producing mixture from getting anywhere near the tank (a holding bottle should there be a overflow) Right now I’m only using one of the pop bottles to produce CO2. I’ll start using the second one after I’ve had a chance to see the impact of just one pop bottle to make sure I won’t be over doing it. I'm starting off slowly as using CO2 in a tank is all new to me.

For the CO2 production mixture, I’m using the ingrediants as suggested by Lady Hobbs in the below post. After 8 hours of use, still getting about 10 to 12bubbles each minute.

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I am open to any other suggestion to make this work even better.

][Only Registered Users Can See Links.] ([Only Registered Users Can See Links.)

][Only Registered Users Can See Links.] ([Only Registered Users Can See Links.)

Cliff
08-09-2010, 12:30 AM
Sorry guys, just noticed my diagram was in the wrong format to open.

Here's the fixed version][Only Registered Users Can See Links.] ([Only Registered Users Can See Links.)

Plant Man
08-09-2010, 11:43 AM
I just put together and started using my first DIY CO2 system this weekend. I took the best parts of other DIY systems that I found when making mine (diagram & pics below). Here’s how I did it:

A) Took two 2 litre pop bottles and drilled a hole in the caps for the air lines. I drilled the holes a little smaller than the air line to get a tight fit
B) I then took a juice bottle with a large cap and drill two holes in the cap for air lines.
C) Ran a 18” length of air hose into each pop bottle cap, only going leaving about one inch of length on the inside of the cap. I put some aquarium safe silicon around the connection.
D) Next I ran a 12 inch length of air hose in to one of the holes of the juice bottle so there was only 1 inch of length on the inside. I connected this air hose with the two hoses from the pop bottles with a T connector.
E) in the other hole in the juice bottle I ran another hose about 24 inches into the second hole in the juice bottle cap (only one inch on the inside) and sealed both hoses to the cap with aquarium safe silicone. The hose in the pic looks longer because I trimmed it afterwords.
F) I placed a one-way check valve on the hose coming out of the juice bottle and then connected it to the bubble counter in the tank

The purpose of the juice bottle was to prevent any of the CO2 producing mixture from getting anywhere near the tank (a holding bottle should there be a overflow) Right now I’m only using one of the pop bottles to produce CO2. I’ll start using the second one after I’ve had a chance to see the impact of just one pop bottle to make sure I won’t be over doing it. I'm starting off slowly as using CO2 in a tank is all new to me.

For the CO2 production mixture, I’m using the ingrediants as suggested by Lady Hobbs in the below post. After 8 hours of use, still getting about 10 to 12bubbles each minute.

[Only Registered Users Can See Links.]

I am open to any other suggestion to make this work even better.

][Only Registered Users Can See Links.] ([Only Registered Users Can See Links.)

][Only Registered Users Can See Links.] ([Only Registered Users Can See Links.)

You’re not going to get any Co2 going into your tank for about 2 weeks with all that extra air in the other bottles.


Recipe,

Just use straight tank water it's not necessary to add tap water to it.

1 cup of sugar is more then enough

1/4 teaspoon yeast

1/8 teaspoon baking soda

Should last you 3 weeks


My Co2 system,

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[Only Registered Users Can See Links.]

Cliff
08-10-2010, 12:29 AM
Thanks Plantman, I'll give your recipe a try as well

I also like how you have a single line shut-off on eah line. That's a great way to keep the CO2 in the system when changing / refilling the bottles (last photo). I'm going to use your idea and put some on my system

Cheers

Plant Man
08-10-2010, 08:07 PM
Thanks Plantman, I'll give your recipe a try as well

I also like how you have a single line shut-off on eah line. That's a great way to keep the CO2 in the system when changing / refilling the bottles (last photo). I'm going to use your idea and put some on my system

Cheers

Do you have a drop checker?

Cliff
08-14-2010, 09:15 PM
Sorry for my late reply.

I do not have a drop checker yet.

Should I get one ? If yes, can you recommend one to me?

Plant Man
08-15-2010, 09:46 PM
Sorry for my late reply.

I do not have a drop checker yet.

Should I get one ? If yes, can you recommend one to me?

Yes, you need one.

Right now I'm using this one. It works well enough. You should be able to get it from your LFS, it’s made by Red Sea. Don't follow the instructions. You need to put a 4 or 5dkh solution in it not tank water and toss the drops that come with it. API's PH test drops are better (they give a much clearer reading).

4-5dkh is evaporated water (no minerals), you then add Baking Soda to it, to bring the KH up to 4 or 5. If you use a 4dkh solution “water” then a lime green color equals "about" 30ppm Co2. Which is what your aiming for.

When set up,

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About an hour later,

[Only Registered Users Can See Links.]

Two hours,

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You want to see a nice "lime green" not green.


Replace the solution every week with you water change.

Oh ya you'll need a KH test kit. API's good and you get lot's of solution 80 tests worth.

Cliff
08-15-2010, 10:56 PM
Thanks Plant Man

Plant Man
08-17-2010, 04:01 PM
How are you planning to defuse the Co2 into the water?

Cliff
08-17-2010, 05:57 PM
I have one of these:

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Its the Hagen bubble defuser. Seems to work fine, the bubbles get smaller as they move up through it.