DIY CO2 - LEAK PROOF! EASY! No Silcone! - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 06-16-2019, 03:13 PM Thread Starter
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DIY CO2 - LEAK PROOF! EASY! No Silcone!

Hi everyone! I want to share this very easy way to create a totally leak proof seal on a diy coke bottle co2 setup. This is a technique to attach the airline tubing through the bottle cap with NO LEAKS. It is so easy and can handle the pressure created even when using a ceramic diffuser.

All you need is a drill, a straight airline tube connector, a bottle cap and some airline tubing. (see pics). For the airline tube connector, I just used one that I pulled out of an old white airstone.

<a href='http://i.imgur.com/2ZdXrc3' title=''><img src='http://i.imgur.com/2ZdXrc3.jpg' alt='' title='Hosted by imgur.com' /></a>

Simply drill a hole in the bottle cap that is the SAME SIZE (or very slightly smaller) than the tubing. Cut the tubing at an angle and thread it through the hole.

<a href='http://i.imgur.com/M5GttOm' title=''><img src='http://i.imgur.com/M5GttOm.jpg' alt='' title='Hosted by imgur.com' /></a>

Then cut the slanted bit off the tubing so that it has a normal flat end again and insert the airline connector into it.

<a href='http://i.imgur.com/ZCoxGDF' title=''><img src='http://i.imgur.com/ZCoxGDF.jpg' alt='' title='Hosted by imgur.com' /></a>

Finally, pull the whole thing back through the bottle cap, shoving the airline connector with the hose through the hole as tightly as you can (I use my teeth to press it through)

<a href='http://i.imgur.com/M6W6ehI' title=''><img src='http://i.imgur.com/M6W6ehI.jpg' alt='' title='Hosted by imgur.com' /></a>

That's it. No leaks!
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post #2 of 5 (permalink) Old 06-16-2019, 04:55 PM
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Pics don't work for me.

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post #3 of 5 (permalink) Old 06-16-2019, 07:07 PM Thread Starter
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Another attempt at adding pics! Can you see these?
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post #4 of 5 (permalink) Old 06-16-2019, 08:58 PM
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Yes, I can see those last pics!

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post #5 of 5 (permalink) Old 06-16-2019, 10:47 PM
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Pretty spiffy! As a possible alternative I found that pvc cement will melt those plastic straight airline connectors just like it does for pvc. So if you have some lying around you could try it on the coke bottle top as well. A 3/16 inch drill bit worked for me when building my reactor.
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