DIY CO2 kit? - The Planted Tank Forum
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post #1 of 17 (permalink) Old 11-19-2017, 03:43 PM Thread Starter
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DIY CO2 kit?

Anyone ever try this DIY CO2 kit?
https://www.amazon.com/dp/B008CUZJF6...511109377&sr=2
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post #2 of 17 (permalink) Old 11-19-2017, 04:24 PM
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No, but you can put together a good CO2 system with an ebay regulator and paintball tank for about $100.
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post #3 of 17 (permalink) Old 11-19-2017, 04:31 PM Thread Starter
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No, but you can put together a good CO2 system with an ebay regulator and paintball tank for about $100.
Do you have instructions on how this is done? I've been researching and I can't figure out how to obtain all the parts I would need.

Bump: Is this what I would need?
https://www.ebay.com/itm/NEW-AQUATEK-CO2-Regulator-Mini-with-Integrated-COOL-TOUCH-Solenoid/230840227751?epid=1212274007&hash=item35bf2657a7:g :fcoAA
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post #4 of 17 (permalink) Old 11-19-2017, 04:54 PM
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There is a green CO2 regulator on ebay from China. It is about $40-45 shipped. I use this and it has been great. No leaks, steady flow, brass fittings, easy to adjust.

Most of the commercial regulators are made in China anyway...

Get one with the voltage of your country (110v)...

They all ship with DIN477 (european Co2 threads) but this doesnt matter because you will be converting to paintball tank.

You can get a DIN477 to paintball adapter from CO2Art in the UK. Its about $20. They also have good prices on the clear co2 tubing. They also have drop checkers, even though you dont really need one. You can add those to your order to get free shipping.

Buy a 24 oz paintball tank on Amazon. They are $23.

Get the tank filled at Dick's Sporting Goods for $5.

You need an API KH test kit and should already have a pH test kit. The KH and pH will tell you how much CO2 is in your tank.

Full paintball tank lasts on my 50g 7+ weeks.

Get one of those anti leak valves $5 from somewhere to keep water from siphoning into your Co2 regulator when it is off.


Keep Co2 tank vertical. You wont be able to use the bubble counter that comes with it. If you need to know your flow rate, disconnect the tube and put it in a clear bottle of water. Count bubbles.

Thats all you need. GL.
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post #5 of 17 (permalink) Old 11-19-2017, 05:39 PM
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psalm18.2, I made my own CO2 generator for around 10 euros using muriatic acid(hidrochloric acid) and limestone(CaCO3), I can generate 5 bubbles per second if I wanted to and it would last me at least 2 months. You can buy some rocks made out of CaCO3 (Calcium Carbonate) from home depot or similar store and you can buy the muriatic acid cheap in most stores in the cleaning section. The only problem Iīve encountered is to generate enough pressure to be able to difuse the CO2 out of a proper nano CO2 difuser, but u can connect it to your pumps outflow which will distribute the CO2 around the whole aquarium.
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post #6 of 17 (permalink) Old 11-20-2017, 10:58 PM
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For $12 you can't beat it. Looks like it comes with everything you need. Definitely better than literally DIYing some crazy caps yourself with silicone or something. Looks like all you need is two bottles and you're ready to mix up a batch.

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post #7 of 17 (permalink) Old 11-20-2017, 11:03 PM Thread Starter
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For $12 you can't beat it. Looks like it comes with everything you need. Definitely better than literally DIYing some crazy caps yourself with silicone or something. Looks like all you need is two bottles and you're ready to mix up a batch.

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Right!
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post #8 of 17 (permalink) Old 11-20-2017, 11:04 PM
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I've never heard of using muriotic acid before. That's hardcore but I'd be nervous having that stuff around my tanks personally. I use it to breakdown coal tar emulsion and concrete splatter at work. I'm sure it works just seems extreme. I use a symbiotic culture of bacteria and yeast with brown sugar and a dash of baking soda. Works pretty well

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post #9 of 17 (permalink) Old 11-20-2017, 11:08 PM Thread Starter
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I've never heard of using muriotic acid before. That's hardcore but I'd be nervous having that stuff around my tanks personally. I use it to breakdown coal tar emulsion and concrete splatter at work. I'm sure it works just seems extreme. I use a symbiotic culture of bacteria and yeast with brown sugar and a dash of baking soda. Works pretty well

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What's your receipe for a 2 litter soda bottle? Thanks.
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post #10 of 17 (permalink) Old 11-20-2017, 11:09 PM
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[QUOTE=psalm18.2;10606338]Do you have instructions on how this is done? I've been researching and I can't figure out how to obtain all the parts I would need.

Bump: Is this what I would need?
[Ebay Link Removed] art sells the whole paintball setup for around $120. I bought 2 but one was defective so watch em. The working unit is great just refilled some tanks today. I keep a full tank on deck at all times so there's no lapse in flow when I run out

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post #11 of 17 (permalink) Old 11-20-2017, 11:19 PM
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I use a kombucha "scoby" which are sometimes available for free on craiglist. Don't see why a "vinegar mother" wouldn't work just as well. Seems they last longer than say bakers yeast alone. I heat up some water and add approx 3/4 cup of sugar for a 2 liter soda bottle. Dissolve the sugar and the scoby. It takes a while to build pressure but then it really last for a few weeks. At least 2 sometimes 3. Like it can take 2-3 days to start producing bubbles but you can have the next reactor already going so there's no lapse in flow. Make a new bottle every 10 days or so and just don't cap it. Keep a piece of cloth over the hole with a rubber band til your ready to use it

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post #12 of 17 (permalink) Old 11-20-2017, 11:35 PM Thread Starter
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I use a kombucha "scoby" which are sometimes available for free on craiglist. Don't see why a "vinegar mother" wouldn't work just as well. Seems they last longer than say bakers yeast alone. I heat up some water and add approx 3/4 cup of sugar for a 2 liter soda bottle. Dissolve the sugar and the scoby. It takes a while to build pressure but then it really last for a few weeks. At least 2 sometimes 3. Like it can take 2-3 days to start producing bubbles but you can have the next reactor already going so there's no lapse in flow. Make a new bottle every 10 days or so and just don't cap it. Keep a piece of cloth over the hole with a rubber band til your ready to use it

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What is Kombucha scoby?
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post #13 of 17 (permalink) Old 11-20-2017, 11:42 PM
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Symbiotic culture of bacteria and yeast used to ferment a probiotic tea-drink traditionally used in central asia to promote healthy digestion etc. It's been popular in the new age movement in the u.s. since the 60's. The scoby itself is the floating mass in the middle which grows and grows as it consumes the sugar. Pieces can be peeled off from the mother and used to start new cultures. This is necessary as it outgrows it's container so they're easy to come by

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post #14 of 17 (permalink) Old 11-21-2017, 12:05 AM
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Using muriatic acid and such does sound "scary" but i always add water to the mix, I buy 1 bottle which consists of 37,5% muriatic acid and the rest water then I add that and 2 or 3 parts water for my setup. This really works and I donīt really know why nobody uses this idea much, I can produce so much CO2 so easly and it lasts me a long time, also the more concentrated the acid is the less acid solution I have to use and the more CO2 will be created in function of how much CaCO3 there is available, I can probably create a setup with this idea which lasts 3/4 months producing 1 bubble per second if I increase the capacity of both acid and limestone (CaCO3) bottles.
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post #15 of 17 (permalink) Old 11-21-2017, 12:20 PM
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I'll try it

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