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#16
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DIY CO2 Mixtu A definitive Answer?
"Frank Mamone" wrote:
So you're using the Hagen diffuser with your own bottle? Correct. I wanted the diffuser from the moment I saw one in the store. But I also wanted to go on the cheap as much as I could. I'm only getting 1 bubble per 6 seconds tops! I'll try your recipe with my own bottle and see what happens. The thing is it only lasts one week right? I suppose you prepare your new bottle 1 day ahead of time? I'm cheating - I've got two bottles hooked up, with staggered start times. The plan is that each week I'll replace the oldest bottle's mixture, which means that I'm keeping each bottle on for two weeks. And I also keep the bottles in the same cabinet as the ballasts for my DIY lighting modification to the Eclipse hood. This keeps them slightly warmer than room temperature, which probably contributes. The plan hasn't had much chance to work in actual practice yet. As I mentioned, I have a tendency to knock the bottles over which screws things up. Plus, I did a poor job of sealing the airline connection to the caps the first time around, and had to deal with that about two weeks ago. So this is really my first successful run - I haven't knocked the bottles over all week. -- www.ericschreiber.com |
#17
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DIY CO2 Mixtu A definitive Answer?
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#18
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DIY CO2 Mixtu A definitive Answer?
Phil,
Are you using a homemade bottle and what is you bubble rate and recipe you use? Thanks, Frank "Phil Dietz" wrote in message om... (David Wee) wrote in message ... Problem is, the bubbles sometimes lose their "momentum" and just stop at a random place along its upward path on the series of ramps. This causes a "bubble" traffic congestion, and multiple bubbles start coalescing into one gigantic bubble that sits there for often 3 minutes or more. Try fiddling with the diffuser. A slight angle helps some folks. The bubbles will go faster in one direction, slam into the corner, then go slow in the other direction getting much smaller. Also of note, your bubbles will stop if you have a snail problem. Those buggers park themselves on the stairs....some even park themselves at the air tube end. I've had my Nutrifin since Nov. Only issue is a slight algae growth on the diffuser steps....my oto is small enough to fit, but it just doesnt want to :-) |
#19
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DIY CO2 Mixtu A definitive Answer?
"Frank Mamone" wrote in message ...
Phil, Are you using a homemade bottle and what is you bubble rate and recipe you use? I use the Hagen CO2 bottle. I use a semi-standard recipe: fill 1st line with sugar put in 1/4 teaspoon baking soda pour in proofed yeast starter dump in 1/4 teaspoon of wine yeast fill to next line with warm water (dont shake) For proofed yeast starter: stir 1/4 teaspoon of quick-activing yeast in a 1/4 cup warm water that has 1 TBS sugar in it. Let it stand until its foamy on top. I found that using wine-yeast alone is "hard to start" and "fizzles" after a few days. So I mix in quick-rise bread yeast. My last batch lasted about 1 month which is comparable to those special packets one can buy from Hagen. I might try the Jello recipe next time. |
#20
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DIY CO2 Mixtu A definitive Answer?
It sounds like I must be doing pretty good with my DIY Co2 setup. I
am using a 2 liter bottle and the nutrafin diffuser. My tank is a 60 gallon. I use the following mixtu 4 cups of warm water, 2 cups of sugar, 1 tspn yeast. Gently shake together and in approx 20 minutes it is ready for the tank. I get 1 bubble oer second with this setup which will last for about the first 3 days. From there, the bubble count will slowly reduce to 1 bubble every 3-4 seconds or so. I change the bottle every week. I did find that the "red star" brand of yeast seems to work better than the others (not sure why). This setup has provided my 60 gallon tank with more than enough Co2. My plant growth has been excellent and the ph stays steady at 7.6. I get pearling throughout the entire tank. One thing I experimented with and think works well, is that I made sort of a non-flow area in the tank. In other words, one half of the tank has a lot of water flow as provided by the aquaclear 500 power filter. the other half of the tank has almost no current since I planted lots of tall plants such as cabomba, hygro, foxtail, ambula, and anubias. This is also the side where the Nutrafin diffuser is located. I think that the calm water allows for much more diffusion of the Co2 into the water. The plants on the side with the current show signs of Co2 fertilization since they are pearling as well and are growing steadily. I have also found that the Co2 bubbles will get "stuck" to the wall of the Nutrafin diffuser quite frequently. Any more suggestions for this one? I hope this helps anyone willing to try. Dave (David Wee) wrote in message ... In article om, Robert Flory wrote: "David Wee" wrote in message ... Another thought: It seems that one can achieve a maximum CO2-water diffusion *rate* with a powerhead/filter intake + bubble system, but retention of the CO2 will be based on the water chemistry (pH, kH, not clear on this, but indeed it seems chemically related). check out http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm Assuming no other buffering ions... there is a direct relationship between pH, KH and CO2. Chuck Gadd has a calulator ... "The formula used for this calculation is: CO2 (in PPM) = 3 * KH * 10( 7-pH ) where KH is Carbonate Hardness in degrees. " The (7-pH) is an exponent, the formating got lost in the cut and past. Ahh. So is "CO2 = 3KH * 10^(7-pH)" an equation or a function? I.e. CO2 = f(KH, pH). The differentiation matters if KH and pH are independent of each other, so I am asking if kH and pH are independent. I don't think water chemistry has anything to do with CO2 retention. That is controlled by somebody or other's laws (hey it been 30 years since college) that govern diffusion and etc. Yeah, I think i used retention and current capacity equivalently, when I should have made the distinction. Dave -- |
#21
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DIY CO2 Mixtu A definitive Answer?
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#23
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DIY CO2 Mixtu A definitive Answer?
(dpots) wrote:
I did find that the "red star" brand of yeast seems to work better than the others After reading this yesterday, I bought some Red Star yeast last night, as I had run out of what I'd been using. Holy cow, this is a lot more active. I put a new bottle on my two-bottle setup perhaps two hours ago. At this moment, I'm getting a bubble rate of more than three per second! I've never had this level of CO2 production before, even with two fresh bottles of the other brand I was using (yellow-ish packets, forget the name). It'll be very interesting to do a pH reading in a few more hours to see what effect this has, and also to see how long this yeast continues the high production level. Thanks for the recommendation. -- www.ericschreiber.com |
#24
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DIY CO2 Mixtu A definitive Answer?
Eric, glad to hear your getting the same results as I am with the Red
Star yeast. By the way, I also found that the Co2 production lasted much longer using this brand over the others. dpots Eric Schreiber wrote in message . .. (dpots) wrote: I did find that the "red star" brand of yeast seems to work better than the others After reading this yesterday, I bought some Red Star yeast last night, as I had run out of what I'd been using. Holy cow, this is a lot more active. I put a new bottle on my two-bottle setup perhaps two hours ago. At this moment, I'm getting a bubble rate of more than three per second! I've never had this level of CO2 production before, even with two fresh bottles of the other brand I was using (yellow-ish packets, forget the name). It'll be very interesting to do a pH reading in a few more hours to see what effect this has, and also to see how long this yeast continues the high production level. Thanks for the recommendation. |
#25
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DIY CO2 Mixtu A definitive Answer?
I finally switched from the (Nutrafin) Hagen Plant Gro canister with a soda
bottle --- my first one. I used 2 cups of sugar, 3/4 teaspoon of yeast (Fleishmann's) and 4 cups of water. I had trouble with the gas leaking at the cap, so put silicone sealant which still leaked until it hardened. I 'll patch it with a glue gun today as someone suggested. Anyhow, I'm getting just slightly over 1 bubble per second! Works great. Brought down my PH to 6.8 and results into a 21ppm CO2 according to the chart. My water is KH is 4.5. I also got rid of the Aquaclear, not because it's a bad filter , but I got a real good deal for a Eheim 2213 Classic for 99$ CDN with media included! They're liquidating the classic models. I also don't have to worry about the surface agitation any more. Thank you all for your recipe suggestions. Frank "Eric Schreiber" wrote in message ... (David Wee) wrote: 1. Warm up water with the stove. Dissolve sugar in it. 2. Cool it down by adding cold water to the sugar water. 3. Seaparately, in the bottle, I add a pinch of yeast + about a teaspoon of baking soda + two teaspoons of flour + more cool water. 4. Mix it up in the bottle. Seems like more effort that you need, but if it's working for you, run with it. I put 1.5 cups of sugar into an empty two liter bottle. Then I put in about one liter of warm water (use the baby bottle test - see if it's too hot for your inner wrist) straight from the tap, filling the bottle halfway. I add a teaspoon of yeast (probably more than I need), put a cap on it, and shake vigorously. The sugar dissolves in the warm water pretty quickly, and I'm ready to go. I remove the cap, and attach the bottle to my CO2 line into the tank. The only real problem I have with my CO2 system is that I've got two bottles, so I can rotate a fresh one on each week. Every flipping time I mess with the bottles, one of them falls over. Without fail. Even when I'm being very careful. This, of course, gets smelly yeasty sticky sugary water into the CO2 line, and gums up the works, blocks the flow, and generally annoys me. -- www.ericschreiber.com |
#26
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DIY CO2 Mixtu A definitive Answer?
In article ,
Eric Schreiber wrote: (dpots) wrote: I did find that the "red star" brand of yeast seems to work better than the others After reading this yesterday, I bought some Red Star yeast last night, as I had run out of what I'd been using. Holy cow, this is a lot more active. I put a new bottle on my two-bottle setup perhaps two hours ago. At this moment, I'm getting a bubble rate of more than three per second! I've never had this level of CO2 production before, even with two fresh bottles of the other brand I was using (yellow-ish packets, forget the name). Yeah, I was just going to mention the same thing. Red Star is some great yeast. I feel like im producing more yeast than I am growing plants. I wanted to mention that the some sci.chem people dont think that adding some baking soda to the mixture is helpful, since its the alcohol, not the pH, that eventually drowns the yeast. On the same note, I wanted add my own two cents and say that flour added to the yeast mixture is quite nice since yeast + flour = gluten. This gluten layer is a bit more thicker, yet still permeable and semi-aqueous, but adds more physical distance between the yeast colonies and the eventual pool of alcohol that forms on the bottom aqueous layer. By adding the flour, you make the yeast colonies less aqueous and more "congealed", so when you can dump out the alcohol+old sugar water more easier without dumping the gluten(yeast + flour) layer since it will stick more to the sides. Then you just add water + sugar back in and seal up the bottle, in which this process can be repeated indefinitely. Now if only yeast was a classified substance and could be sold on the black market, we could all be very profitable yeast dealers. -- |
#27
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DIY CO2 Mixtu A definitive Answer?
Interesting. So you have alot more total yeast that way.
What type of bubble rate are you getting? "Phil Dietz" wrote in message m... "Frank Mamone" wrote in message ... Phil, Are you using a homemade bottle and what is you bubble rate and recipe you use? I use the Hagen CO2 bottle. I use a semi-standard recipe: fill 1st line with sugar put in 1/4 teaspoon baking soda pour in proofed yeast starter dump in 1/4 teaspoon of wine yeast fill to next line with warm water (dont shake) For proofed yeast starter: stir 1/4 teaspoon of quick-activing yeast in a 1/4 cup warm water that has 1 TBS sugar in it. Let it stand until its foamy on top. I found that using wine-yeast alone is "hard to start" and "fizzles" after a few days. So I mix in quick-rise bread yeast. My last batch lasted about 1 month which is comparable to those special packets one can buy from Hagen. I might try the Jello recipe next time. |
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