I found it was fairly easy to screw up the Elos alk test, so for that one I use Salifert. The Elos Ca test I love.
One good thing is that none of those numbers seem all that bad. From what I've read and learned I try and keep my alk somewhere around 8-9 (but it can certainly a couple points either side of that), Ca around 400-450, and my Mag 1400-1450.
But like I said other than a wee bit of tweeking (and only if you really wanted to) your numbers don't look bad at all.
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