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CO2 Question
I saw where someone had posted a link to a chart that showed the optimum
CO2 (I think). I've just started adding CO2 to my 155g tank the other day and I've got the PH stable at 7.0 with 2dKH and 5dGH . Odd thing is, at night, the CO2 turns off w/ the lights, but my PH stays the same.... I'm running at about 2 bubbles per second on the CO2. OK, so on to the question(s): 1) Is the PH supposed to change?? 2) Are the KH and GH ok at this level? 3) How long should it take before I notice a difference in the plants? |
#2
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CO2 Question
. I've just started adding CO2 to my 155g tank the other day
and I've got the PH stable at 7.0 with 2dKH and 5dGH . That's not much CO2. With a KH of 2, you should aim for a pH of 6.4 or 6.6. Odd thing is, at night, the CO2 turns off w/ the lights, but my PH stays the same.... That sometimes happens. At night, the plants start absorbing oxygen and releasing CO2, so a tank full of healthy, thriving plants may suffer a pH drop at night. Or, if CO2 is turned off, pH may not change, the plants' CO2 production making up for the CO2 injection. In your case, though, the problem might be that you simply aren't getting much CO2 into the water during the day. So there's little change with CO2 turned off. 1) Is the PH supposed to change?? Not necessarily, if you're talking day vs. night. 2) Are the KH and GH ok at this level? Yes, though I'd keep an eye on the KH. It tends to drop in an established tank, due to biological processes. I wouldn't want it to drop much below 2, for the sake of the tank's stability. 3) How long should it take before I notice a difference in the plants? The change can be nearly instant, as far as pearling goes. But you may not notice much of a change, with that level of CO2. Leigh http://www.fortunecity.com/lavender/halloween/881/ |
#3
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CO2 Question
Blake,
The site you're looking for is: http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm It explains the whole thing....enjoy. Frank "Blake" wrote in message ... I saw where someone had posted a link to a chart that showed the optimum CO2 (I think). I've just started adding CO2 to my 155g tank the other day and I've got the PH stable at 7.0 with 2dKH and 5dGH . Odd thing is, at night, the CO2 turns off w/ the lights, but my PH stays the same.... I'm running at about 2 bubbles per second on the CO2. OK, so on to the question(s): 1) Is the PH supposed to change?? 2) Are the KH and GH ok at this level? 3) How long should it take before I notice a difference in the plants? |
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