co2 drop checker question - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 05-14-2011, 04:47 PM Thread Starter
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co2 drop checker question

I just purchased a GLA co2 system with an oracle drop checker. theory behind this is by color. blue is low co2. green is the targeted area and yellow is too much co2. The amount of co2 is relative to the amount of plants in a tank. how does a drop checker know how many plants are in a tank?

scenario one - co2 system with a drop checker, dc is in the green and I have one single plant.

scenario two - co2 system with a drop checker, dc is in the green and I have just say 50 plants.
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post #2 of 8 (permalink) Old 05-14-2011, 05:22 PM
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I don't think the drop checker can discern the number of plants. My understanding is that the drop checker merely provides an indication of the co2 present in the water as compared with the reference solution in the drop checker.

The double drop checkers are useful because the one camber is meant to provide you the "ideal" color with which to have the solution that is actually measuring co2 at. Thus, if your double drop checkers are both the same color you will theoretically have the right amount of co2 in your water. I say theoritically becuase you can always tweak to add more co2 based on whether you are doing any harm to your fish, i.e., yellow is not necessarily bad if your fish are fine. But do keep an eye on them.
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post #3 of 8 (permalink) Old 05-14-2011, 05:24 PM Thread Starter
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thanks! this can be confusing
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post #4 of 8 (permalink) Old 05-14-2011, 05:29 PM
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Excuse me, i just looked up the oracle drop checker. Looks like the white center just makes it easier to tell what color your reference solution is.

Make sure you mix up a 4 dKH solution to use in your drop checker or else it will be of no use. You can look up on this site how to do it with baking soda. Also you might want to mix up a 5dKH solution if it looks like you checker is going yellow but you are not actually maxing out based on the fish's tolerance for co2. Again keep an eye on your fish.
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post #5 of 8 (permalink) Old 05-15-2011, 12:58 AM Thread Starter
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Quote:
Originally Posted by sidefunk View Post
Excuse me, i just looked up the oracle drop checker. Looks like the white center just makes it easier to tell what color your reference solution is.

Make sure you mix up a 4 dKH solution to use in your drop checker or else it will be of no use. You can look up on this site how to do it with baking soda. Also you might want to mix up a 5dKH solution if it looks like you checker is going yellow but you are not actually maxing out based on the fish's tolerance for co2. Again keep an eye on your fish.
the solution is the only thing you need to add.
"no solution preparation required"
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post #6 of 8 (permalink) Old 05-16-2011, 04:36 PM
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you're supposed to use 4dKH and the ph solution if you want it to be the most accurate.

and i agree with what sidefunk said.
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post #7 of 8 (permalink) Old 05-16-2011, 05:41 PM Thread Starter
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you're supposed to use 4dKH and the ph solution if you want it to be the most accurate.

and i agree with what sidefunk said.
I understand, I would have thought since I paid 50 bucks for this that the solution would they provided would be the most accurate!
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post #8 of 8 (permalink) Old 05-17-2011, 01:59 AM
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The drop checker measures concentration of dissolved CO2. It doesn't matter how many plants you have. You still want the drop checker to be green. It just means that you have enough for you plants to consume, but not too much. If you have one plant, you might need to dose less, but no matter what, green will always mean the same (assuming your drop checker is accurate.) Read this thread I wrote
https://www.plantedtank.net/forums/eq...ker-works.html

-Bill



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