How does this diy co2 recipe sound?

LOL 120g using DIY co2? Good luck with that.

JasonG75 said:

LOL 120g using DIY co2? Good luck with that.

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That helps lol

Well why not? the only difference between 120g and 30g is the size, instead of a 2L bottle on a 30g it will bigger bottle maybe 20L on a 120g.

All it means is multiplying everything to suit the larger size no big deal and not rocket science, it will work just the same as the mixture will be roughly the same equivalent on a 10g as it will on a 120g.

Also the way I see it on a bigger tank with larger water volume it will be more stable, I can monitor the ph,kh,gh and any changes will take longer to have an impact on the system due to the larger volume of water, once I notice a decrease in Co2 BPM I can have another mix ready to swap over too.

It is like saying a two story house if fine but a 10 story house is out of the question :eek5:

You have too little water. If you use 10X sugar and yeast, you need 10X water too. I would put around 18+ liter of water in that big container. Air space there is counter productive, because you then have a long wait for all of the air to finally be exhausted from the container. Until then your "CO2" will be mostly air.

I use 2 liter of water, perhaps a little less, .5 tsp yeast, .5 tsp baking soda, and 2 cups of sugar. One cup of sugar is about 7 ounces, so 10X 2 cups is 8.75 pounds, not 6 pounds. Half a tsp of yeast times 10 is 5 tsp, not 1 3/4 tsp. With those proportions this should work for about 5 bubbles per second.

Hoppy said:

You have too little water. If you use 10X sugar and yeast, you need 10X water too. I would put around 18+ liter of water in that big container. Air space there is counter productive, because you then have a long wait for all of the air to finally be exhausted from the container. Until then your "CO2" will be mostly air.

I use 2 liter of water, perhaps a little less, .5 tsp yeast, .5 tsp baking soda, and 2 cups of sugar. One cup of sugar is about 7 ounces, so 10X 2 cups is 8.75 pounds, not 6 pounds. Half a tsp of yeast times 10 is 5 tsp, not 1 3/4 tsp. With those proportions this should work for about 5 bubbles per second.

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Guess I found a lower recipe than you use Hoppy but thanks for your advice. I will defo go with it and the recipe as you have said and see what happens for a week or two anyway before I get any fish just as an experiment really, nothing ventured nothing gained and all that lol

If it works then big yesssssss if it does not it will of only cost an hour and perhaps £10-£12

Got to try these things sometimes but in theory I do not see why it will not work and work as well as it does on a 10-30g tank.......

If anyone knows why it will not work please fill me in, I think the main reason people are put off the idea is not having space to hide the water butt etc and not wanting a 20L+ water butt sitting there looking like a mess, mine will fit nicely in the cabinet under the tank.

Also how long does your mix last Hoppy and would it be fair to x10 the length of time as the mix is x10 the quantity?

I don't know how long my DIY bottles last. I just change one every week, so I know they last 2 weeks, at least. Based on the setup I had a year or so ago, it should last close to 3 weeks before the bubble rate drops too much. If I were you I would use two smaller containers, rather than just one big one. Then I would renew one of them every 10 days or so.

If you have problems, one of them will likely be avoiding leaks. The carbonated beverage bottles most of us use are designed to hold against the pressure, and don't leak at all at the cap. The seal in the cap reseals very well each time it is retightened, so the bottle is perfect for this use. Even with that, if I let the pressure build up in my bottles I get small leaks at the holes where the tubes enter the bottle caps. It only takes a very small leak to waste all of the CO2 the bottle produces. I learned this when I accidentally kinked the CO2 tube going to the aquarium.

dannylc said:

That helps lol

Well why not?

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Consistancy..fluctuating co2 levels CAUSE BBA. Since the bubble rate and consistancy of the bubbles can not be controlled then swapping in and out of containers is a lot of work.

I kept 2 1 gallon containers on my 55, and would swap out for the other 2 (total 4 1 gallon containers) I did this weekly. It was a pain.

Google the "DIY CO2 Jello Method" I used it for a while on my 40 and it works great.

Danny,

Let me know how it works out. I'm also interested in why some people are against DIY Co2 for larger tanks.

I have about 3 of these laying around: http://www.google.com/search?aq=f&s....,cf.osb&fp=7e4e33062469ff64&biw=1920&bih=979

They are winemaking carboys and are designed exactly for taking pressure....I've been thinking of hooking up 1 or 2 to my 125g to see how it works out but am waiting till I get diy co2 dialed in on my smaller tank first.