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yeast co2 bulkhead
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mad about fish
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Joined: 29 Oct 2003
Location: north london, England

PostPosted: 2005.09.04(Sun)4:59    Post subject: yeast co2 bulkhead Reply with quote

hi all I no I don't post very often but I am always lurking Cool

anyway I am trying to set up my diy yeast co2 system again but can't find a bulkhead or brass niple for the bottle cap so that I can put the airline on
as per this article
http://www.qsl.net/w2wdx/aquaria/diyco2.html#2
they give a link to get it here
http://www2.towerhobbies.com/cgi-bin/WTI0001P?&I=LXG849&P=V
but I live in the uk
anyone no where to get them in the uk
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kittyclover
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Joined: 10 Aug 2005

PostPosted: 2005.09.04(Sun)16:37    Post subject: Reply with quote

I just drilled a hole in the top of the bottle cap then pulled the tubing through it with pliers then sealed around it with crazy glue
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mad about fish
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Joined: 29 Oct 2003
Location: north london, England

PostPosted: 2005.09.04(Sun)18:03    Post subject: Reply with quote

yes but this is the most common mistake because they cap is made of polyethylene it hard to create a good seal which means this system is prone to leaks
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kittyclover
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Joined: 10 Aug 2005

PostPosted: 2005.09.04(Sun)19:16    Post subject: Reply with quote

very true I couldn't get mine to work today cause I found a small leak coming from the lid. I had this stuff called goop household sealant that I used in the bathroom when I was renovating last year and just put it on the inside of the pop lid and on the outside of the lid. Its working like a charm and I have 1 bubble per second now Very Happy
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MattTVI
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Joined: 23 Nov 2004
Location: Woodstock, GA

PostPosted: 2005.09.07(Wed)12:10    Post subject: Reply with quote

mad about fish,

if you can get to a homedepot, a simple double sided nipple should work, I have been using this w/ my co2 bottles w/ no problems... Smile

simply drill the bottle cap and use neopreen (sp?) washers on the inside of the cap to keep the seal tight... works like a charm...
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Ryan Yates
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Joined: 07 Feb 2005
Location: South Africa

PostPosted: 2005.09.07(Wed)12:32    Post subject: Reply with quote

Alternatively you could try and get a female coaxial cable connector.

Its a bit of work, but you drill out the plastic section in the middle, and then drill a hole in the bottle cap and screw the connector in place, sealing it all around with silicone sealant. When you're done with that put the airline through the connector and seal that with silicone sealant. Since you can tighten the connector onto the cap and the sealant sticks to the aluminium connector you don't have to worry about the polyethylene bottle lid not bonding to the silicone.

If you need any more explaining then just let me know.

HTH
Ryan
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Miso
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Joined: 14 May 2005

PostPosted: 2005.10.04(Tue)23:17    Post subject: Reply with quote

all I did was drill a small hole into the cap and fit the line thru.

of course I made the hold really small.

to get the line thru the hole, I had to cut off the top half of the airline off and I pushed that half thru the hole. that way I had something to hold onto while I pulled it thru. it worked great for me and less stuff to buy. it is airtight and looks very clean.
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