CO2 Injectors

Discussion in 'Anything DIY related' started by PeeKay, Nov 11, 2009.

  1. PeeKay

    PeeKay

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    Hi All

    I found this on the net: Full article on http://www.aquahobby.com/articles/e_co2.php

    I have just copied and pasted the section I would like to query on: Has any body ever tried this and is it effective?


    How to make the injector
    OK, if you've read and understood what'd been discussed above, then you're ready now to learn how to make and correctly use a DIY CO2 injector. which as we've mentioned is extremely simple.

    Material for the bottle:
    • 1 two-liter plastic bottle (with plastic bottle cap);
    • 1 thin plastic tube (the kind used in tanks with air pumps);
    • 1 airstone (optional);
    • Aquarium silicon sealant.
    Procedure: Make a hole in the bottle cap, such that the tube squeezes tightly through it. Insert the tube until its about 3 cm below the cap, and then spread silicon around the hole to seal it. Let it dry for a day. The plastic tube should be long enough to go from the bottle position down to the gravel in the tank. Put an airstone at the end of it if you want thinner bubbles.
    Material for the mixture: 1 teaspoon of yeast;
    2 or 3 cups of sugar;
    ½ teaspoon of Baking Soda;
    1.5 liters of water (preferably filtered and free of chlorine).
    Procedure: Completely dissolve the yeast, sugar and baking soda into the water. Pour it into the bottle and seal it well. The production of bubbles will generally begin in an hour or so. A well made injector will keep producing bubbles for about 10-15 days. We have presented here only a basic description of how to set one up. There are many variants that can be found in articles around the net. There are also many comments and details that can help the user to improve or optimize the DIY injector, but this is also subject for other articles. The main reason for this one was to clarify and prepare anyone interested, so that he or she may make the decision based on objective information, not on fashion!
     
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  3. Slojo

    Slojo

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    Tried it and it works ok IF you have a small tank.
    Less than 60 liters i would say.
    Anyone else??
     
  4. Mongwopman

    Mongwopman King Ding-a-ling

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    I have tried, and works, if your tank is bigger, simply make 2 bottles of mixture and connect via T connectors!

    Also be sure to use a check valve so the mixture doesnt go into your tank.

    there are actually LOADS of articles all over the web about this.

    Google DIY CO2
     
  5. OP
    PeeKay

    PeeKay

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    Thanks Slojo & Mongwopman. I think I'll have to use a few bottles, I'll probably hook it up to the internal filter, there is a port on the internal filter for airhose so I might aswell make use of that.

    Thanks.
     
  6. Kuhli Loach

    Kuhli Loach

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    PeeKay: I did not go with a normal 2 liter cold drink bottle, but used a garden spay bottle. The type that has a spray lance attached with a hose and a hand pump to pressurize the contents. No chance of the bottle exploding as it has a pressure release valve. It can take about 15 liter of liquid (I think), so the mixture that you put into it can be about 3 or 4 time that of a 2 liter bottle, and lasts much longer. So far so good.
     
  7. OP
    PeeKay

    PeeKay

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    Thanks Khuli Loach, that is very good advice indeed! Good to hear it can be done and it works. Thanks.
     
  8. johan008

    johan008

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    I dont want to hijack the thread but what I want to know is
    When you put C02 in the tank does your water parameters go up and what if you want to take it out after 3 or 4 months

    Can someone tell me
     
  9. butcherman

    butcherman Administrator

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    this method only lasts about 2 weeks. so you have to replave the mixture everytime. your co2 will dorp according to the amount of co2 in the system
     
  10. Linxie

    Linxie

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    Oh awesome! I'll be trying this for sure. Thanks for the thread!
     

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