Need to pick some brains C02 related - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 07-26-2008, 02:50 AM Thread Starter
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Lightbulb Need to pick some brains C02 related

I was randomly browsing ebay the other day and came across a glass diffuser for around $6 shipped. I ordered it with the intent to hook it up to my Hagen bottle and use that to diffuse (fun experiment). I put the hagen ladder in my other tank and am now using a 2 liter to power that.

I know diffusers need alot of pressure to work but i figured the Hagen system was pretty sturdy looking and everything would be fine. It would either generate enough pressure for the diffuser or blow the hose off.

I hooked it up and waited about 8 hours using a co2 mix that was already producing gas but never saw any bubbles in the tank. When i picked up the hagen bottle to look at it i heard a loud hiss and my hand got wet. The co2 had built up enough pressure and was actually escaping through the lid's threads. The threads are pretty large so I was not really suprised.

My question is has anyone tried doing something similar? Any Ideas for a high pressure co2 generator? I thought about trying teflon tape on the hagen threads but it dosent seem like it would really work well. A 2 liter would have exploded already I imagine.
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post #2 of 5 (permalink) Old 07-26-2008, 02:54 AM
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Some diffusers require pressures that only a pressurized CO2 system can provide.

With that said, I've "powered" some diffusers using 2L bottles. Remember, soda bottles are designed to hold a LOT of pressure. The manufacture would have to design the bottles so that they could withstand the pressure of a carbonated beverage if it had fallen on the floor and rolled around. So your best bet is a 2L bottle, actually.
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post #3 of 5 (permalink) Old 07-26-2008, 03:13 AM
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Pop bottles are a very good canister for DIY CO2, they make a pressure tight seal and are easily replaced if needed. It's also handy having multiple bottles so you can trade them out without inhibiting the normal flow of CO2.


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post #4 of 5 (permalink) Old 07-26-2008, 03:14 AM
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Oh, something I forgot. Drill a hole smaller than the CO2 tubing. Cut the tubing at an angle so you can thread it through. Yank it through with pliers and you pretty much have an airtight seal without the need for silicone.
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post #5 of 5 (permalink) Old 07-26-2008, 04:02 AM Thread Starter
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I used to work at a gas station and we had pepsi that sat outside in the sun and those would explode on a regular basis o_O
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