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Questions about pressurised CO² setups


breakaway

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Hey,

Just wondering if it's worth investing in a 'high quality' brand like JBJ or similar. I had a quick look on eBay and I can source the regulator + solenoid valve for about $120 NZ incl shipping. But only its one of those "chinese brands" (Link 1) (Link 2)

So I'm basically wondering - is it okay to get this chinese quality stuff for my aquarium? With filters and heaters I don't take this sort of risk as they have the potential to kill fish, but CO2 not so much, right?

If I was to import the above, all I'd have to do is get a bubble counter and a diffuser (both relatively inexpensive), and I'd be in business - is this correct?

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Also - if I order the regulator from overseas, is it going to fit a NZ bottle? If not, will I be able to buy adapters to make it fit?

To fit my reg to a sodastream bottle I had to order an adaptor, but I don't think sodastream is a standard fitting anyway. What type of bottle are you using?

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How long does the sodastream last for? The main reason I'm staying away from soda stream is because it holds only 500mL of CO² vs the 5kg or so that the other bottles have.

Won't it run out in a month or so? And you have to pay $12 to re-fill / replace it at the supermarket? Whereas a bigger bottle wouldn't need refills for close to a year on my 200L tank.

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How long does the sodastream last for? The main reason I'm staying away from soda stream is because it holds only 500mL of CO² vs the 5kg or so that the other bottles have.

Won't it run out in a month or so? And you have to pay $12 to re-fill / replace it at the supermarket? Whereas a bigger bottle wouldn't need refills for close to a year on my 200L tank.

I haven't set mine up yet, still waiting for the adaptor to arrive. If you can find a good supplier to fill your Co2 bottle go for the big one. I'm stuck with the sodastream for now but if it becomes a hassle refilling all the time I'll look for a bigger bottle.

Also, not sure if it makes a difference but I know the Co2 in a sodastream is food grade Co2 so is cleaner than say Co2 used in a FE. I may be wrong on this though.....

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How long does the sodastream last for? The main reason I'm staying away from soda stream is because it holds only 500mL of CO² vs the 5kg or so that the other bottles have.

Won't it run out in a month or so? And you have to pay $12 to re-fill / replace it at the supermarket? Whereas a bigger bottle wouldn't need refills for close to a year on my 200L tank.

I remember someone that used a sodastream saying theirs ran out every week or two.

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Yeah. Usually when you buy a bottle they come unfilled anyway.

The hardest part setting up Co2 for me has been deciding on the bottle and refills and finding clear hosing suitable for the pressures. :-?

There is a company called Airliquide who might be able to fill your 10kg.

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how can you get high grade CO2? :-? and anything in large concentrations is harmful, 30ppm of CO2 is an alright level for most fish though

I could be wrong but I was led to beleive there is different grades to Co2 purity. I'm not sure if it makes any difference in an aquarium though :-?

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What is the diameter of the connector on the bottle end of the bottles that you get in NZ? I asked the guy who sells the regulator on eBay and he says the regulator end is 2cm. How big are the connectors on our bottles? It's not a standardised thing is it? That would be far too logical :roll: .

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