co2

Places to buy co2 equipment:

Welding Shops, Fire Equipment shops, look for the company Airgas, and try your LFS.

If you have a LFS that specializes in planted tanks, they will most likely have some equipment. You can also purchase stuff online.

On ebay, search JBJ regulator or Milwaukee, both good regulators. I just bought a used Pacific Coast, haven't used it yet, should know soon. Those three regulators are made for applications like aquariums, so they are compact. You can also just find any ole' CGA-320(that's the connections size to a co2 tank) regulator.

So, ebay's a great place to look for regulators and for co2 tanks, also try www.froogle.com. Finally, www.bestaquariumregulator.com.

Other notes: Locally(SF Bay Area), I know of a few shops that sell 5# tanks for $65 filled, and refills are $14(cheapest you'll find in the Bay Area).
 
Thank you will have to look into the sites along with ebay to see if i can't find one reasonably. Again thank you for all of your suggestions!
 
I have 2 of these regulators (Milwaukee Co2 MA957 Regulator Set) that I got from http://www.aquariumplants.com/CO2_Accessories_s/50.htm. I noticed that the price took a drastic jump in price though. I bought mine for $79.99 and now they are $129.99. I also have 2 x 10 lb tanks. One was bought from aquariumplants.com and the other from a fire extinguisher company.
 
After using the Pacific Coast regulator for only an hour, I have a reason not to buy it: It contains a needle/flow valve which is nice, but you sacrifice the ability to regulate downstream pressure. It's pre-set at about 30-40 psig(I didn't look to closely). I'd rather be running at 5-6 psig. This causes probelms because you have to operate at the low end of you needle vavle range. I have a Swagelok needle valve downstream, but at that high pressure, again you have to use the low end to control flow.

I'm going to look into adding in some other pressure reducing valve, maybe some kind of metering valve.
 
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