I use the Elos test kit. Havn't used anything else to compare it against. It is a bit much though to get the result, hopefully its worth it.
I don't use the Elos alk kit because I don't believe it. I went through quite a few and they always said my alk was really low. I was doising and running a kalk drip and I could get my alk up but it would rop back down. It was very unstable. I bought every alk kit I could get my hands on and the end result was Elos was the lowest by far of all the test kits. I now go by API and things are stable.
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72g bowfront, t5.
29g JBJ nano cube, ATI 26HD.
Livestock: clown fish, chromis, coral beauty.
Corals: Toadstool, maze brain, candy cane, mushrooms (purple & green hairy), button polyps, green zoas, GSP.
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