So my NO3 has been tested by two test kits. API which showed zero and Salifert which showed just above zero. In case I had issues that i wasn't detecting, a few weeks ago I started with Biopellets (though a minor amount). This was well after corals started dying in mass.
I have searched corals for pests but can find none. My frag tank is attached to main tank and frags have gone through same issues. I've dipped them in several dips but nothing visible. Haven't added a coral in many months. I was too full.
Might try a Revive dip to see if maybe bacterial infection...not sure if that would help.
The only event was an Alk dip that I described above quite a while back. ALK is now 7.1, CA is 500, MG is 1400. Tests done today. Ph is 8.32 and 8.31 on my two probes respectively.
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Mark...
290g Peninsula Display, 425g total volume. Setup Jan 2013.
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