DIY Co2 questions - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 01-04-2009, 06:24 PM Thread Starter
 
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DIY Co2 questions

Ok I have a 3g picotope and am looking into making my own co2 system out of a liter bottle. I new to this and have a couple questions.

1. Will Co2 kill the fish I want to put in the tank?

2. Where is the best place to put a diffuser? I heard in my filter inlet or near the filter inlet.

3. Should I just get a Jungle Co2 system? pro's and con's?
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post #2 of 8 (permalink) Old 01-04-2009, 08:55 PM
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I'm just about to do the exact same thing, only I'm going to use a smaller orange juice bottle and half the yeast doing the jello method.

If the hardness of your water is high enough the CO2 should not kill the fish because it won't cause the pH to go crazy, if your water isn't hard enough the drop in pH could kill. And yes, near the fliter inlet.

Give me another day and I'll have pics up of my set up.

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post #3 of 8 (permalink) Old 01-04-2009, 09:14 PM
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It is hard to kill a fish with diy co2, but Phoenix is right, just keep an eye on the pH. I wouldn't go with a jungle co2 product, simply because I find it to be an expensive version of the diy method. just use less yeast at first if you are worried about the fish. I started out with only 1/8 teaspoon. Also, waiting to add the 2 Liter for twenty four hours after making the brew helps the intial burst of co2 stabilize. One very important piece to buy however, is a check valve. I learned the hard way after draining about 20 gallons in just a few short minutes.

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post #4 of 8 (permalink) Old 01-04-2009, 10:07 PM
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Oh yeah, check values all the way. giggle. I made that mistake with an airpump once, didn't take more than a 30 min powerfailure to drain my ten gallon.

I recently had a pH dip due to adding the CO2, but I found the hardness was almost non existant and I didn't wait 24 hours...I'm going to give that trick a try.

I don't understand why my water is soooo soft, I used RO right, I guess I need more.

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post #5 of 8 (permalink) Old 01-04-2009, 10:57 PM Thread Starter
 
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I cant wait to see your setup....I'm going to get the parts tomorrow and make it. I wont have it set-up and working until my plants come in and my aquasoil arrives. As for a diffuser I found one on ebay its a glass nano diffuser. Any recommendations for a diffuser?
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post #6 of 8 (permalink) Old 01-04-2009, 11:07 PM
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I hear the real problem with glass nano diffusers with DIY is that there is not enough pressure to keep the micro plate clean and it gets quickly clogged and then stops working.

If it is a cheap nano diffuser go ahead and try it and if it works let me know! Giggle. However I'm finding the limewood airstone is giving off really really small bubbles and it's easy to clean.

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post #7 of 8 (permalink) Old 01-04-2009, 11:10 PM
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I'm doing diy co2 with both of my 2.5 gallon nanos. The bottle size I'm using is about 500ml. I use 1/2 cup sugar, 1/8 t. yeast, 1/8 t. baking soda.

I just feed the co2 tube into the filter intake. For awhile, one tank had one of those glass nano diffusers, which worked quite well until I did something stupid and broke it. I placed it near the filter outflow, which did a good job of sending bubbles throughout the tank.
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post #8 of 8 (permalink) Old 01-04-2009, 11:12 PM
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I'm just about to go post a pic of my DIY over on my Picotope thread, link in sig.

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