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Old 01-10-2014, 06:36 PM   #1
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My own diy drop checker

I quickly threw together a drop checker today with things I had laying around the house. Click image for larger version

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It's upside down there. Click image for larger version

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Starting to turn green.
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Old 01-11-2014, 10:36 PM   #2
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Very nice. Will work great, and looks pretty decent for DIY
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Old 01-12-2014, 01:07 AM   #3
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Thank you. It is working well. I was also concerned about getting 4dKH solution correct but is seems to be indicating fine. I enjoy the diy aspect of this hobby just as much as the plants and fish! ☺️
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Old 01-12-2014, 01:20 AM   #4
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Nice job!


20long hitech/10gal shrimptech
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Old 01-12-2014, 04:05 PM   #5
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What exactly is a drop checker?
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Old 01-12-2014, 06:25 PM   #6
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It is a container placed inside the tank with one of several various solutions inside. The general purpose of the solutions is to show the level of co2 in the tank.

You can buy indicator solutions, or DIY your own, which probobly works better.


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Old 01-13-2014, 01:33 PM   #7
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I made my own solution as well but have say that I'm not 100% sure of its accuracy as I don't have a scale that goes into the decimal points. It's indicating green and the plants are pearling so that's a plus
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Old 01-13-2014, 01:49 PM   #8
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If you are using a standard KH test you can double the accuracy by doubling the sample size of the water so that each drop is half a degree. You can further improve it to 0.25 degrees by quadrupling the sample size.
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Old 01-14-2014, 01:55 AM   #9
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Ok now I'm confused 😓 which is easy to do. I made the solution by mixing 3 liters of distilled water with 3.6grams of baking soda giving me 40 dKH solution I them took 50 ml of the 40 dKH and diluted it with 450ml of distilled water giving me 4 dKH. I put 5ml in the drop checker and added 3 drops of ph tester. That gave me blue which turned to blue/green when adding the co2 to the tank. Of course trying to find the link to the info again is not easy task.
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Old 01-14-2014, 07:15 AM   #10
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Is this the link Karay? I just read that and it seems like the info you used.

DIY: 4dkh standard solution for drop checker
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