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| Tags: change, co2, diy |
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#1
07-02-2003, 06:52 PM
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No PH change with DIY CO2
i use a rena but on a much smaller tank, 3G.
are the bubbles a fine stream coming from the side of the rena or from the top or bottom gaskets as leaks? make sure the rena is at the bottom of the tank for maximum effect. also you could try a 2" since the 4" just puts the point of potential emission higher in the tank with no benefit. i actually cut mine down to under an inch and reassembled it. good luck jtm -- Remove NOSPAM for email replies "Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick 
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#2
07-02-2003, 06:52 PM
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No PH change with DIY CO2
i use a rena but on a much smaller tank, 3G.
are the bubbles a fine stream coming from the side of the rena or from the top or bottom gaskets as leaks? make sure the rena is at the bottom of the tank for maximum effect. also you could try a 2" since the 4" just puts the point of potential emission higher in the tank with no benefit. i actually cut mine down to under an inch and reassembled it. good luck jtm -- Remove NOSPAM for email replies "Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick
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#3
07-02-2003, 06:56 PM
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No PH change with DIY CO2
I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of
sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick
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#4
07-02-2003, 07:16 PM
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No PH change with DIY CO2
Dude, your pH will drop in time, some people say it goes down quite a bit,
or, respectively goes up quite a bit if you remove the co2... I have never experienced this happening quickly... Basically i noticed a total of a .4 ph drop in about 2 months time. (my ph is currently at 6.9-7.0)... Give it time and ph will drop (I also use the powerhead method to ditribute the co2) -Jason "Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick
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#5
07-02-2003, 07:16 PM
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No PH change with DIY CO2
Dude, your pH will drop in time, some people say it goes down quite a bit,
or, respectively goes up quite a bit if you remove the co2... I have never experienced this happening quickly... Basically i noticed a total of a .4 ph drop in about 2 months time. (my ph is currently at 6.9-7.0)... Give it time and ph will drop (I also use the powerhead method to ditribute the co2) -Jason "Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick
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#6
08-02-2003, 05:08 PM
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No PH change with DIY CO2
"Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick The amount the pH will change depends on the kH of the water in the tank. The more dissolved carbonates, the less the pH will change. What is your kH? Jamie ~
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#7
08-02-2003, 05:08 PM
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No PH change with DIY CO2
"Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick The amount the pH will change depends on the kH of the water in the tank. The more dissolved carbonates, the less the pH will change. What is your kH? Jamie ~
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#8
08-02-2003, 08:16 PM
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No PH change with DIY CO2
"Jamie D" wrote in message news:VX91a.30988$2H6.684@sccrnsc04... "Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick The amount the pH will change depends on the kH of the water in the tank. The more dissolved carbonates, the less the pH will change. What is your kH? Jamie ~ 50 PPM Rick
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#9
08-02-2003, 08:16 PM
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No PH change with DIY CO2
"Jamie D" wrote in message news:VX91a.30988$2H6.684@sccrnsc04... "Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick The amount the pH will change depends on the kH of the water in the tank. The more dissolved carbonates, the less the pH will change. What is your kH? Jamie ~ 50 PPM Rick
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#10
08-02-2003, 09:27 PM
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No PH change with DIY CO2
"Rick" wrote in message ... "Jamie D" wrote in message news:VX91a.30988$2H6.684@sccrnsc04... "Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick The amount the pH will change depends on the kH of the water in the tank. The more dissolved carbonates, the less the pH will change. What is your kH? Jamie ~ 50 PPM Rick 50 ppm is around 2.8dKh. At a pH of 7.6 that's around 2 ppm of CO2, which is low even for a non-CO2 injected tank. With DIY I would expect at least 18 ppm of CO2, which would give you a pH of around 6.6. Either the CO2 isn't getting into the tank for some reason, or there is something wrong with your test kits. I personally think 1/4tsp yeast is not enough, I would go with half to 1 tsp - but even so, you should see at least some drop in pH with your set-up as described. My vote is for inaccurate test kits. Jamie ~
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#11
08-02-2003, 09:27 PM
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No PH change with DIY CO2
"Rick" wrote in message ... "Jamie D" wrote in message news:VX91a.30988$2H6.684@sccrnsc04... "Rick" wrote in message ... I set up 2 liter bottle of DIY CO2 about 10 days ago, mixed up 2 cups of sugar, 1/4 tsp of yeast and a pinch of baking soda and filled the bottle about 3/4 full. I initially had this hooked into a powerhead. It was dispensing as I could see the puffs of gas coming out of the output. I recently bought some Rena Micro bubblers to use rather than the power head and now have the bottle with a fresh mix (last night) hooked into a 4" bubbler in a 20g planted tank. My Ph in the tank remains at about 7.6. I can see bubbles coming out of the bubbler but should the PH not change ?. Is the tank not getting enough CO2, one would think in a 20g that one two liter bottle would be enough, yes, no?? Thx. Rick The amount the pH will change depends on the kH of the water in the tank. The more dissolved carbonates, the less the pH will change. What is your kH? Jamie ~ 50 PPM Rick 50 ppm is around 2.8dKh. At a pH of 7.6 that's around 2 ppm of CO2, which is low even for a non-CO2 injected tank. With DIY I would expect at least 18 ppm of CO2, which would give you a pH of around 6.6. Either the CO2 isn't getting into the tank for some reason, or there is something wrong with your test kits. I personally think 1/4tsp yeast is not enough, I would go with half to 1 tsp - but even so, you should see at least some drop in pH with your set-up as described. My vote is for inaccurate test kits. Jamie ~
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#12
08-02-2003, 10:19 PM
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No PH change with DIY CO2
"Jamie D" wrote in message news:RKd1a.37308$be.24572@rwcrnsc53... "Rick" wrote in message ... 50 PPM Rick 50 ppm is around 2.8dKh. At a pH of 7.6 that's around 2 ppm of CO2, which is low even for a non-CO2 injected tank. With DIY I would expect at least 18 ppm of CO2, which would give you a pH of around 6.6. Either the CO2 isn't getting into the tank for some reason, or there is something wrong with your test kits. I personally think 1/4tsp yeast is not enough, I would go with half to 1 tsp - but even so, you should see at least some drop in pH with your set-up as described. My vote is for inaccurate test kits. Jamie ~ I use the same test kit on my Mbuna tank where I buffer the water with baking soda and a bit of salt and it tests normally between 140 to 170 . I'm getting a steady stream of fine bubbles from the micro bubbler so it appears that co2 is definitely being dispensed, so I;m not sure what is going on. Rick
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#13
08-02-2003, 10:19 PM
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No PH change with DIY CO2
"Jamie D" wrote in message news:RKd1a.37308$be.24572@rwcrnsc53... "Rick" wrote in message ... 50 PPM Rick 50 ppm is around 2.8dKh. At a pH of 7.6 that's around 2 ppm of CO2, which is low even for a non-CO2 injected tank. With DIY I would expect at least 18 ppm of CO2, which would give you a pH of around 6.6. Either the CO2 isn't getting into the tank for some reason, or there is something wrong with your test kits. I personally think 1/4tsp yeast is not enough, I would go with half to 1 tsp - but even so, you should see at least some drop in pH with your set-up as described. My vote is for inaccurate test kits. Jamie ~ I use the same test kit on my Mbuna tank where I buffer the water with baking soda and a bit of salt and it tests normally between 140 to 170 . I'm getting a steady stream of fine bubbles from the micro bubbler so it appears that co2 is definitely being dispensed, so I;m not sure what is going on. Rick
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#14
09-02-2003, 12:28 AM
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No PH change with DIY CO2
"Rick" wrote in message ... "Jamie D" wrote in message news:RKd1a.37308$be.24572@rwcrnsc53... "Rick" wrote in message ... 50 PPM Rick 50 ppm is around 2.8dKh. At a pH of 7.6 that's around 2 ppm of CO2, which is low even for a non-CO2 injected tank. With DIY I would expect at least 18 ppm of CO2, which would give you a pH of around 6.6. Either the CO2 isn't getting into the tank for some reason, or there is something wrong with your test kits. I personally think 1/4tsp yeast is not enough, I would go with half to 1 tsp - but even so, you should see at least some drop in pH with your set-up as described. My vote is for inaccurate test kits. Jamie ~ I use the same test kit on my Mbuna tank where I buffer the water with baking soda and a bit of salt and it tests normally between 140 to 170 . I'm getting a steady stream of fine bubbles from the micro bubbler so it appears that co2 is definitely being dispensed, so I;m not sure what is going on. Rick Wish I could be more help. I use DIY CO2 in a 20 gallon and everything works just fine - only difference for me is I have the bubbles feed straight into the intake of my HOB filter. My CO2 level ranges between 18 - 28 ppm. Jamie ~
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#15
09-02-2003, 12:28 AM
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No PH change with DIY CO2
"Rick" wrote in message ... "Jamie D" wrote in message news:RKd1a.37308$be.24572@rwcrnsc53... "Rick" wrote in message ... 50 PPM Rick 50 ppm is around 2.8dKh. At a pH of 7.6 that's around 2 ppm of CO2, which is low even for a non-CO2 injected tank. With DIY I would expect at least 18 ppm of CO2, which would give you a pH of around 6.6. Either the CO2 isn't getting into the tank for some reason, or there is something wrong with your test kits. I personally think 1/4tsp yeast is not enough, I would go with half to 1 tsp - but even so, you should see at least some drop in pH with your set-up as described. My vote is for inaccurate test kits. Jamie ~ I use the same test kit on my Mbuna tank where I buffer the water with baking soda and a bit of salt and it tests normally between 140 to 170 . I'm getting a steady stream of fine bubbles from the micro bubbler so it appears that co2 is definitely being dispensed, so I;m not sure what is going on. Rick Wish I could be more help. I use DIY CO2 in a 20 gallon and everything works just fine - only difference for me is I have the bubbles feed straight into the intake of my HOB filter. My CO2 level ranges between 18 - 28 ppm. Jamie ~
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