CO2 tubing question - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 07-08-2005, 08:01 PM Thread Starter
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CO2 tubing question

Anybody tried to use this tubing for CO2 line? It's made of neoprene. Is it any better than regular airline or silicone?

http://www.aquariumguys.com/airlinetubing3.html

29g eco, DIY up to 81W PC (55W used), Rena Filstar XP2 Filter
Corkscrew Vals, 2 angels, 4 corydoras aeneus, Ramshorn snails, MTS
5 gal RCS tank with sand bottom, java moss, small internal filter, MTS, Ramshorn snails.
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post #2 of 8 (permalink) Old 07-08-2005, 08:43 PM
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Haven't tried it, but it'll probably be just as good but a little bit more expensive. I'm going to buy a 20' silicon air tubing for C02 for about $3.50 from Dr. Foster & Smith
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post #3 of 8 (permalink) Old 07-08-2005, 11:14 PM
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That's Norprene tubing. It has a CO2 permeability rating of 1200. ({cc-mmsec-cm2-cm Hg } x 10-10). It is primarily designed for submersed applications (airstones) when there is an ozone generator present.

Silicone is the worst material to use for CO2, its permeability rating is 20,132.

Vinyl would be better, its rating is 360.

The "best" would probably be FEP (semi-rigid), with a rating of 5.9.

http://www.coleparmer.com/techinfo/t...m&Title=Search
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post #4 of 8 (permalink) Old 07-09-2005, 02:12 AM
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Quote:
Originally Posted by Jdinh04
Haven't tried it, but it'll probably be just as good but a little bit more expensive. I'm going to buy a 20' silicon air tubing for C02 for about $3.50 from Dr. Foster & Smith
Good way to go!!! The tube is made for what we need it for and the price and amount is right!!!


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post #5 of 8 (permalink) Old 07-09-2005, 02:22 AM
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Quote:
Originally Posted by Hypancistrus
That's Norprene tubing. It has a CO2 permeability rating of 1200. ({cc-mmsec-cm2-cm Hg } x 10-10). It is primarily designed for submersed applications (airstones) when there is an ozone generator present.

Silicone is the worst material to use for CO2, its permeability rating is 20,132.

Vinyl would be better, its rating is 360.

The "best" would probably be FEP (semi-rigid), with a rating of 5.9.

http://www.coleparmer.com/techinfo/t...m&Title=Search
I posted in another thread about CO2 leaking thru tubing. It seems by the formula posted you know what your talking about here.

How much CO2 will leak thru a 6 foot tube when hooked up to a 5lb tank with an output pressure of 10 psi using the tube you recommend and how much will be leaked using the worst tube you mentioned. Will the result be a measurable amount in say a 30 day period and how much will that be?

Im just wondering if the amount of leakage is any amount to worry about or not.


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post #6 of 8 (permalink) Old 07-09-2005, 03:02 AM
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Dr Foster Smith sells that neoprene tubing (same as the one in the first post, although it is really norprene) and it is pretty affordable. I use it instead of silicone tubing now.
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post #7 of 8 (permalink) Old 12-27-2005, 01:23 AM
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I just bought 24 feet of that from JL Aquatics for about 21 Canadian.

My new r##f tank will be about 10 feet away from the plant tank, so I plan to use that to power the Calcium reactor from my existing C02 set up, with the aid of a second pH controller and an inline solenoid.
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post #8 of 8 (permalink) Old 12-27-2005, 03:11 AM
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The tubing I have is Polyurethane with a rating of 395. $0.50 a foot.
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