CO2 mix

Postby KittyKat » 2006-06-04 19:25

What do you guys (those of you who have DIY CO<sub>2</sub>) use for the mix?
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Postby Indigo Blue Fish » 2006-06-04 22:21

Oh blimey - don't even ask me lol - my attempt was a horrible failure lol!
Mind you - I did get a nice bottle of alcohol at the end!

If you're interested in that line - I have a lovely jar of specialised yeast food - better than sugar, and keeps them going longer - and more stable too!

I'll send you it if you like - it cost me a bit, but hey - I'm not going to use it :wacko:

And make sure you seal the bottles TIGHT - my mockup exploded when experimenting... :unsure:

Oh - and the best airstone is the limewood I think - it's got a really fine texture, so really fine bubbles too - more gets absorbed into the water.
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Postby KittyKat » 2006-06-05 07:54

mine seems to be going good so far... right now i'm using 5:4 parts water to sugar and 1/4 tea spoon of yeast (for a 500ml bottle)

i'm not using an airstone, but the tip from a washbottle (those of you who work in labs should know what that is...)
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Postby KittyKat » 2006-06-09 11:40

Anyone else uses CO<sub>2</sub>?

My mix has so far worked and there is a noticible inmprovement in growth rates of all plants... the only problem I have had is that the apple snails keep pushing up the outlet :P but that should be solved as soon as i get those sucker clips for air line.
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Postby Humbug » 2006-06-13 18:30

Hi, try going to google and type in diy co2, it will take you to a site where it gives basic instructions on how to make a co2 kit for your tank! only costd coppers too!, just set mine up tonight - fingers crossed :vic:
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Postby KittyKat » 2006-06-13 19:11

Mine's going well so far.. it's been up almost a week now and there's been a noticible jump in plant growth rates!
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Postby -Rambler- » 2006-06-20 17:28

Very cool Kat, I'll send you a few recipes when I get home. I have a good link on this subject but mind you it is a very large article and DIY instruction. I would guess 2 parts water to 1 part sugar, 1/8 to 1/4 tsp. active dry yeast (reactivated in luke warm water) and a pinch of baking soda. What sized tank are you injecting the CO2 in?
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Postby KittyKat » 2006-06-20 21:31

just the small ones (5 gal and under) i'm using a small 400ml bottle for it and so far it's working :) no problems with algae or anything ^_^
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Postby -Rambler- » 2006-06-21 02:17

I did this recipe soooooooo many times bi-weekly that it should be burned into my memory. I got a compressed setup with a 4 way manifold and 1 controller now, sooooo much easier.
In a 1200ml generator I used 2 cups of boiling water to 2 cups of sugar, let it cool to room temp. Add a bout 1/2 cup tepid water (about 100F) and shake the yeast to "wake it up". A pinch of Baking soda.
If you are using active dry yeast the warm water will "awaken" it from its dormant stage and it will last longer and react more consistant with the sugar producing a consistant amount of CO2.
The boiling water will sterilize the yeast generator and the sugar. This doesn't make a difference at first, but down the road after alot of use it will help allot.
The Baking Soda is to help stabilize the mixture, and add longevity.
For smaller tanks I would start off with 1/8 tsp per 2 cups sugar etc. or maybe a little less. I did the 3/8 tsp. in a 29G and it worked great. Keep in mind that different water chemistry will alter the production somewhat, so starting off low and work up is reccomended. Keep an eye on pH and KH, I like 25ppm CO2 saturation, up to 30ppm sometimes.
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Postby Dookie » 2006-07-08 22:02

First off, what does bi-weekly mean? Bi-sexual/bi-weekly? you like all weeks, do it every week? lol seriously I don't know. Please tell me. I'm figuring it probably means every other week, but?

The DIY CO2 system. I've been contemplating the use of co2 for a while, but was first put off as I read that too much is dangerous to the fish, and too little would be of no real benefit.
How are you supposed to know that you aren't overdosing with the DIY method?

Humbug & Kat, how are your systems doing now? IBF, lol, i'll try and put your mini disaster to the back of my mind when I set mine up! :lol:

Also, does adding co2 bring the PH down, and if so by how much?
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Postby KittyKat » 2006-07-08 22:53

Biweekly can mean either every two weeks or twice a week.

Well... as far as I know, you gotta go by instinct more then anything else. If you just go about it logically, then you shouldn't have a problem... I use 200-500ml of mixture for 5 gals and under which needs changing every week or so.

So far so good :) it really has helped plant growth! Last time I made up the mix I kinda overdid the sugar so it's lasted me 3 weeks so far and still producing bubbles at a rate of 2 per minute ^_^ it is a bit much, but the tank is really heavily planted. Last week I thought it was getting a bit slow, si took the airline off, covered it with my hand and turned it over once... see IBFs post for what happened! Had to stand the bottle in the sink for a few hours before it stoped overflowing :wacko:

Yes. For me by barely anything at all... by no more then 0.5 but I have heard of it bringing the pH down by 1-2 in some cases.

My advice is start small and bring it up if it's not enough :tup:
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Postby Indigo Blue Fish » 2006-07-09 20:44

Lol, don't worry about that Dookie - I'm disaster prone when experimenting anyway - that's why I did it in the greenhouse.

It doesn't half smell funny though.
I think I still have a bottle of pure alcohol somewhere.

Oh, BTW - if you want to increase longevity, go to your local brewers store, and grab high vol. yeast.
It's grown/bred? to withstand high levels of alcohol, and so will put out for much longer.

And it's dirt cheap.

I think I used too much, and that was my problem.

When it does slow down, give it a bang on the surface, rather than tipping it - that'll activate it steadily. LATER you can tip it!
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Postby Indigo Blue Fish » 2006-07-09 20:46

(We used to brew our own here - my Dad used to do Tequila, Cherry brandy - all sorts. My Grandad on Mum's side used to do elderflower, until a tommy exploded and coated the kitchen. Nan wasn't happy.
NOTE: Elderflower wine when brewing is Immensely unstable - handle with care!)
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Postby -Rambler- » 2006-07-12 01:53

Sorry I didnt get back sooner, very busy these days damn it.
The DIY CO2 system. I've been contemplating the use of co2 for a while, but was first put off as I read that too much is dangerous to the fish, and too little would be of no real benefit.
How are you supposed to know that you aren't overdosing with the DIY method?
It is hard to OD CO2 with the DIY or fermentation type systems, but not impossible. I did it when experimenting with different mixtures and over did it. It resulted in the death of a large Pleco. The level of CO2 is determined by testing like for nitrates, ammonia pH and KH. As a matter of fact cross referencing pH and KH will give you your CO2 level. Target range for a planted tank is betwwen 15-25ppm. Anything over 35ppm CO2 can cause respitory trouble to fish. Anything 5ppm or lower is not noticeable. After 10ppm you will notice a considerable change in growth and appearance. Plants will be way more lush and grow quickly. You won't regret adding CO2 injection to a planted tank. CO2 is one of the most under dosed nutrients for aquatic plants in the hobby. It is also one of the most important nutrients.
First off, what does bi-weekly mean? Bi-sexual/bi-weekly? you like all weeks, do it every week? lol seriously I don't know. Please tell me. I'm figuring it probably means every other week, but?
Sorry, Yank here ^_^ should of said "fortnight"? :o
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Postby -Rambler- » 2006-07-12 01:53

Sorry I didnt get back sooner, very busy these days damn it.
The DIY CO2 system. I've been contemplating the use of co2 for a while, but was first put off as I read that too much is dangerous to the fish, and too little would be of no real benefit.
How are you supposed to know that you aren't overdosing with the DIY method?
It is hard to OD CO2 with the DIY or fermentation type systems, but not impossible. I did it when experimenting with different mixtures and over did it. It resulted in the death of a large Pleco. The level of CO2 is determined by testing like for nitrates, ammonia pH and KH. As a matter of fact cross referencing pH and KH will give you your CO2 level. Target range for a planted tank is betwwen 15-25ppm. Anything over 35ppm CO2 can cause respitory trouble to fish. Anything 5ppm or lower is not noticeable. After 10ppm you will notice a considerable change in growth and appearance. Plants will be way more lush and grow quickly. You won't regret adding CO2 injection to a planted tank. CO2 is one of the most under dosed nutrients for aquatic plants in the hobby. It is also one of the most important nutrients.
First off, what does bi-weekly mean? Bi-sexual/bi-weekly? you like all weeks, do it every week? lol seriously I don't know. Please tell me. I'm figuring it probably means every other week, but?
Sorry, Yank here ^_^ should of said "fortnight"? :o
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