Thanks, I wasn’t doing that. It didn’t cross my mind, now you’ve said it it seems obvious .
Really appreciate your reply.
Not too happy with the Salifert customer service. I emailed them directly; the first response was “I don’t know I’ll get a senior staff member to reply”. The senior staff then messaged a week later to say “It means there is no magnesium at all in your aquarium”.
Impossible, I already told them that my salt mix has 1350 ppm and I do a 100litre water change every 2 weeks.
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