RED SEA CO2 Test Kit
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Old 08-17-2007, 09:41 PM   #1
UnderWaterGardener
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RED SEA CO2 Test Kit


I've been following the CO2 chart that is based upon the levels of PH and KH and recently bought the RED SEA CO2 test kit to see if the chart is correct and just when I thought I had a handle on CO2, I'm confused again.

My PH is usually around 6.4 with approx. 1 degree of KH yielding a CO2 level of 12m/l (according to the chart).

According to the test kit, I do not have any dissolved CO2 in my tank.

I am using the RED SEA Turbo CO2 Bio System and have 96 Watts of lighting on a 38 gal. tank. All of the growth in my tank has improved dramatically since the addition of CO2. I have also tested the water at night and in the morning with the same results.

Questions:

Does anyone have this test kit and if so, maybe point out something I might be doing wrong?

Does the relationship between PH and KH DEFINITELY indicate that one has CO2 in their tank?
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Old 08-17-2007, 10:08 PM   #2
retoid
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Quote:
Does the relationship between PH and KH DEFINITELY indicate that one has CO2 in their tank?
I would say that the chart is more accurate. Are your plants growing good?
My guess is those test strips are off or you are doing it wrong
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Old 08-17-2007, 10:36 PM   #3
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Are you using the Red Sea CO2 Indicator? It works well if you use a known dKH solution.

I used billionzz's instructions and made my own dKH solution. Don't use aquarium water with it.
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Old 08-18-2007, 05:49 AM   #4
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Thanks for the reply. I'm actually not using strips, it's the test where you add 5 drops of bottle A to 10 ml of aquarium H2O and keep adding solution from bottle B until it reaches a certain color. But yes, my plants are growing well so I guess that's all that matters.
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Old 08-18-2007, 06:43 PM   #5
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I know which CO2 kit that you have. I had one years ago. Mine came with their Plant kit that has an Iron test kit too. I threw them away.
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