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reconmarui 02-25-2013 01:30 AM

What sealent is good for DIY yeast co2 system?
What sealant works the best for this system? Also how can I tell if it is working?

sepulvd 02-25-2013 06:15 AM

What sealent is good for DIY yeast co2 system?
are you taliing about what to use to prevent co2 leaking from the cap where the tubing goes thru. if yes i usually use crazy glue around the tube snd cap. never had leaks

Bandit1200 02-25-2013 10:02 PM

I used hot glue on mine.

m00se 02-25-2013 10:09 PM

No glue. Just drill a hole under-sized for the tubing, cut the end of the tubing diagonally so you make a sharp angled end, and pull it through the cap with a pair of pliers. Air tight and fool proof.

newms 02-25-2013 10:55 PM

I get leaks sometimes out of the threading area of the bottle. I use aquarium silicone to seal it up, however the stuff isn't cheap. I like the idea of hot glue that was mentioned above.

I check for leaks by placing the whole setup under water in my water change bucket and blowing into the end where the gas would normally come out. If there is a leak, you will see the little bubbles streaming out of it. If the system isn't working, 99% of the time it is because of a leak.

mistahoo 02-25-2013 11:40 PM

GE Window and door silicone

thesawguy 02-26-2013 12:01 AM

I will agree with the m00se method. But will add that with the tubing I used it eventually got stiff and leaked at the part that was squeezed, so I would just pull it down a little further and create a new squeeze point. Silicone and super glue failed for me after a few months.

kaaayd 02-26-2013 12:24 AM

I have tried silicone and just a tight fitting tube. Both have failed for me. What I have done now (and has worked consistently for the ones I made for friends) is:

Use a Gatorade bottle. I found that soda bottles tend to leak through the cap sometimes. It caused me hours of frustration until I used a Gatorade bottle (I use the bottles that are close to 2 liters and also the one that's a gallon or something). Seals perfect every time.

Drill the hole in the cap, put the tube through, then wrap some duct tape around the cap. Make sure there is a decent amount of tape above the cap. Fill it with Gorilla Glue (doesn't have to be to the top, but thick enough). Let it dry over night.

This will definitely work. I have never had a problem with this method.

reconmarui 02-26-2013 02:15 AM

I used a combination of excessive amounts of jb weld water proof putty that hardens(had it lying around) and hot glue, in excessive amounts too, holding up well so far or at least I'm getting bubbles

mistahoo 02-26-2013 06:09 AM

Re: What sealent is good for DIY yeast co2 system?
Drill a hole in the top. Use a nylon fitting and screw it on. Then stick the tubing onto the nipple. Truly failproof compared to anything mentioned on here so far. No leaks and you can remove it if needed or just swap the caps.

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