red sea vs salifert ALK testing

M4sonic

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Mar 26, 2022
Messages
42
Reaction score
32
Review score
+0 /0 /-0
Location
belgium
Rating - 0%
0   0   0
My salifert test was running out so i bought a red sea alkalinity pro test.

Now I'm getting different results from both test.
salifert: 9.6dkh
red sea: 8.4dkh

I'm not sure which one to trust.
the red sea is harder to read the green color change,but even if i go into the overdose color change (yellow) the measurement is still lower than the 9.6dkh salifert gives me.
Both test are well within their expiration date, and so far ive done each test about 5 times and the test is consistently off each time.
I dont really care about a 0.2-0.4 dkh difference but 1.2 dkh off is to much for comfort.
 
World Wide Corals

PatW

2500 Club Member
Review score
+0 /0 /-0
View Badges
Joined
Feb 14, 2013
Messages
2,539
Reaction score
1,933
Review score
+0 /0 /-0
Location
Orlando, FL
Rating - 0%
0   0   0
Salifert always seems to come out about ,6 to 1.2 DKH higher than Red Sea Pro for me. These tests do not meant to give really good absolute results. They are better for giving you a ball park notion of DKH. They are more valuable in letting you know if the ALK is rising, falling or being stable so you can dial in your dosing.
 
OP
OP
M

M4sonic

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Mar 26, 2022
Messages
42
Reaction score
32
Review score
+0 /0 /-0
Location
belgium
Rating - 0%
0   0   0
well if the salifert is reading 1.2 dkh to high that would mean ive been running my tank at 6.3ish

which could explain why my corals started doing better when i decided to up my alk to 9 (which would be 7.8 assuming the same 1.2 dkh error)
 

Polyp polynomial: How many heads do you start with when buying zoas?

  • One head is enough to get started.

    Votes: 27 10.6%
  • 2 to 4 heads.

    Votes: 145 57.1%
  • 5 heads or more.

    Votes: 65 25.6%
  • Full colony.

    Votes: 10 3.9%
  • Other.

    Votes: 7 2.8%

New Posts

ACC
Back
Top