The Planted Tank Forum - View Single Post - API GH & KH test
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post #1 of (permalink) Old 03-17-2015, 05:49 AM Thread Starter
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Join Date: Feb 2015
Location: Houston, TX
Posts: 154
API GH & KH test

I got the test completed but the instructions are poor I don't understand them.

I tested my KH (had to add 5 drops to 5ml of tank water to turn yellow)
I tested my GH (had to add 9 drops to 5ml of tank water to turn light green)

What do these numbers mean. There's a chart wight the instructions but it's extremely confusing. The only reason I wanted to check the water is because I'm switching to ro di water tomorrow and don't want my discus to die because of huge changes in water parameters.
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