RedSea KH Test. Cards different color?

[NanaReefer]

Actually can't match either color on these cards. Top one is 5yrs old and bottom is 1yr just purchased in March.
So seeing I can't even come close to the colors on the cards, how do I get my numbers?

 

[cromag27 Verified Sponsor]

You won't be able to match the card. red sea now says the end color should be orange/peach.

 

[NanaReefer]

Nice to know. [emoji57] Thanks for the reply [emoji1360]

 

[njtiger aquariums]

You won't be able to match the card. red sea now says the end color should be orange/peach.

Agree. When you water change from blue to a redish color then you have your number.

 

[Bpb]

Yep. Went through a dozen batches of those before switching to the Hanna checker. End point was a different color on every batch. Not WILDLY different but definitely noticeable. Just look for some variation of red/orange.

 

[cromag27 Verified Sponsor]

Yep. Went through a dozen batches of those before switching to the Hanna checker. End point was a different color on every batch. Not WILDLY different but definitely noticeable. Just look for some variation of red/orange.

Do you like the Hanna alk?