Using API test kit to test ph different colors while testing, please help.

[Jeremy Lain]

On this surface and with this lighting I get this color.

On this surface with this lighting I get this color.

What is the pH reading it's the one on the right? I put the pink one in the picture because I can see that its pink without questioning it. The one one on the right is the same test in both pictures.

 

[NY_Caveman]

On this surface and with this lighting I get this color.

On this surface with this lighting I get this color.

what is the ph reading it's the one on thw right? I put the pink one in the picture because I can see that its pink without questioning it.

Best practice for most test kits is to look down through the tube sitting upright with the white card under it. Different room lighting can obviously have an effect.

 

[Jeremy Lain]

The pictures are in the same places here, I took a picture from the top and I am still confused? Which color is correct?

 

[Coralsea_co]

pH is one of the parameters that has been affected by the passage of time.
What is the time difference between the two tests together?

 

[Jeremy Lain]

It's the same test in all the pictures I posted same water from the reef tank and the same pH test solution.

 

[Coralsea_co]

Repeat the test again..

 

[NY_Caveman]

The colors are hard enough in person. Much harder from a photo. When I have trouble I hold the tube about a half inch above the card and it helps me.

 

[jrill]

With the API kits you need to hold the tube against the white of the card to read the correct color. API has a YouTube to show
Looking through the top doesn't work well with API.

 

[Jonreefer]

also best to go in a room with a bright light and natural light color so it doesnt impact the color of the test. I never read any of my color test in the same room as my tank. I go in my bathroom and read everything in there because its bright and natural light color.