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Old 10-28-2011, 04:45 AM   #1
gre
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Fluval CO2 20 System - Replacement Canisters(Non-Fluval)

Many people on the internet were questioning weather or not the Fluval CO2 20 System has propriatery threading on their 18g cartridges. Seeing as a package of 3 Fluval brand cartridges costs around $25 I thought I would try a "non-fluval" threaded CO2 canister. I went to my local bike shop and picked up two 16g threaded cartridges for CO2 bike pumps for $8 and they fit perfectly! But 4$ a canister is still kind of steep in my opinion but here are some alternatives that will work:

Canada: Mountian Equimtment Co-op sells 20 for $28! (I tested these as well and they are only $1.40 each!)

USA: eBay

I scoured the internet trying to find a concrete answer and found nothing so I am just posting incase anyone else was wondering!

Cheers
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Old 05-17-2012, 11:17 AM   #2
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So, the 16g work even though the fluval cartridges are 20g? Is the thread the same?

Would love an update on this, as they are only $2 Australian dollars (CHEAP!)

I realize this is an old thread but would love it if anyone could advise if this works.
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Old 05-19-2012, 03:34 PM   #3
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That is correct, I am using 16g threaded even though the FLUVAL cartridges are 20g. The threads are the same, no problems there. I'm still using them!

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Old 05-20-2012, 10:59 AM   #4
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Oh amazing. I'll have to have a look at some I've found available in Australia. Thanks for thr reply
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Old 07-10-2012, 10:38 AM   #5
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THANKS for the tip! I've been trying to determine what canisters would be compatible...also saw some at C. Tire too (that was my first thought to check out - not sure if $$ wise which is cheaper and whether C. Tire ones have the same thread).

How long does a 16g canister last for you?

Thanks again!

Quote:
Originally Posted by gre View Post
That is correct, I am using 16g threaded even though the FLUVAL cartridges are 20g. The threads are the same, no problems there. I'm still using them!

Cheers
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Old 07-10-2012, 11:20 AM   #6
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Good find! I used to use the smaller fluval co2 kit but gave up because of expensive refills and it was not effective. There was no way to make it run at 1 bps because the valve is not precise enough. I have had to get e replacement valves due to the valve getting stuck on. I grabbed an automatic co2 system for a good price and am a lot happier now-and so are my plants.
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Old 07-31-2012, 10:45 PM   #7
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Quote:
Originally Posted by maxwellag View Post
Good find! I used to use the smaller fluval co2 kit but gave up because of expensive refills and it was not effective. There was no way to make it run at 1 bps because the valve is not precise enough. I have had to get e replacement valves due to the valve getting stuck on. I grabbed an automatic co2 system for a good price and am a lot happier now-and so are my plants.

Max,

What kind of set up did you get? Thinking about going the co2 route and looking for a variety of options.
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Old 07-31-2012, 11:43 PM   #8
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Quote:
Originally Posted by Scott F

Max,

What kind of set up did you get? Thinking about going the co2 route and looking for a variety of options.
I got a good deal in a used a zoo co2 kit. It has a 2lb refillable tank and comes with a solenoid. If I were you I would just your money and go for a dual stage regulator with a solenoid and refillable tank. It is much much cheaper in the long run.
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Old 07-31-2012, 11:53 PM   #9
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Quote:
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I got a good deal in a used a zoo co2 kit. It has a 2lb refillable tank and comes with a solenoid. If I were you I would just your money and go for a dual stage regulator with a solenoid and refillable tank. It is much much cheaper in the long run.
Was thinking about a 5lb cylinder and a MA 957.
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Old 08-01-2012, 12:02 AM   #10
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Quote:
Originally Posted by Scott F

Was thinking about a 5lb cylinder and a MA 957.
That would be good. I would make sure you have a store that will refill the tank first.
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