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Old 07-03-2010, 01:31 AM   #351 (permalink)
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Default Re: DIY Drop Checker

hi
i am using a prepared 4 dkh water
the water was made in a lab from baking soda an distilled water
i use 2 ml of 4 dkh water and 10 drops of sera ph reagent and it turns green not blue
i see on youtube some 1 use 4 drops of ph reagent and turn blue
it can bee the moisture ?
i will tell 2 mi friend 2 redo the 4 dkh water
not even now after 2 days of using it diden't change 2 much the color

i test my water and i have 6 ph , but the drop checker is almost green and the test shows me almost yellow . if i am not wrong it has 2 be both the same color . i am right ?
that meens that the solution from the drop checker is not good?
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Old 07-03-2010, 03:56 PM   #352 (permalink)
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Default Re: DIY Drop Checker

dzsenci,

The solution in the drop checker and the tank water are independant of each other. The two should test differently.

I'm starting to think you may have some misconceptions about how a drop checker works. Add to that the fact that all information reguarding them is in English. Sorry, but I can't help there but, I can offer what is concidered by many a very good post on the subject. Read it over and then get back with any questions you may still have.

http://www.barrreport.com/showthread...t=drop+checker

Pat
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Old 07-04-2010, 12:51 AM   #353 (permalink)
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Default Re: DIY Drop Checker

i know that the solution and the tank water are independent
i read a lot about the co 2 checker before i start to use one , but i that is better to ask because some of my friends told me that is possible to use the solution from the drop checker too test the water ph .
my drop checker works , because it change the color to yellow green (that to much of co2 , i know that , i am traing to reduce that )
mi problem is that my water that i use is only 3 Kh strong , and i need to raise a little bit the ph because it's to low ( 6 ) .
that why i wondering of good working about the drop checker because watching the ph/kh/co2 table it's not good
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Old 07-04-2010, 10:30 PM   #354 (permalink)
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Default Re: DIY Drop Checker

Bottom line on drop checkers with 4dkh solution and standard PH reagent is that they turn blue initially and change to green or on to yellow acording to the CO2 content of the tank water. If your DC is already showing some shade of green initially then either the solution is not at 4dkh or your reagent is old or off in some way. Bromothymol blue added to the DC should indicate a PH of near 7.6, blue on the chart. 1 full point of PH down to 6.6 will take it to green. If you can't trace the discrepancy perhaps you can try to determine what PH your initial test indicates and what 1 full point of PH drop should show in terms of a color change.

Pat
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Old 06-06-2011, 01:31 AM   #355 (permalink)
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Default Re: DIY Drop Checker

The sera ph Reagent does not use Bromothymol blue. THis is why it turns green.

IT WILL NOT WORK LIKE OTHER pH REAGENT
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Old 06-06-2011, 06:19 AM   #356 (permalink)
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Default Re: DIY Drop Checker

Quote:
The sera ph Reagent does not use Bromothymol blue. THis is why it turns green.
Bromthymol blue changes from blue at pH 7.4 through green at around pH 6.6 to yellow at pH 6.

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Old 06-08-2011, 06:55 PM   #357 (permalink)
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Default Re: DIY Drop Checker

pics not showing
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Old 06-09-2011, 05:35 AM   #358 (permalink)
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Default Re: DIY Drop Checker

What pictures are you talking about? What posts?
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