Sorry for the losses. Just read the last two pages, hoping to find any more answers. But other than high alk and perhaps low nutrients I don't know.
I wouldn't worry too much about the copper. We've dosed a lot of homegrown phytoplankton, and my guess is that we've used a similar fertiliser as you, but never seen any signs on raising copper levels on our ICP tests. Anyway, you'll get the answer on that when you get the result.
I know it's hard to sit back and wait when these things happen. But I like to wait and see. You've corrected the KH, now try to keep the nutrient levels steady. If you do more changes now you'll risk more stress on the corals and the system.
About the KH, I prefer even lower levels when nutrient are low. I aim for 7dKH. But that's another change, and your corals are probably adapted to your level around 9. So that was just a though
If it's feels better we've lost quite a few corals lately as well, after a move. And I can't say for sure why. That's reefkeeping sometimes. It sometimes takes time to get the tanks to do their thing and just work.
Hope things turn soon! Good luck.
I wouldn't worry too much about the copper. We've dosed a lot of homegrown phytoplankton, and my guess is that we've used a similar fertiliser as you, but never seen any signs on raising copper levels on our ICP tests. Anyway, you'll get the answer on that when you get the result.
I know it's hard to sit back and wait when these things happen. But I like to wait and see. You've corrected the KH, now try to keep the nutrient levels steady. If you do more changes now you'll risk more stress on the corals and the system.
About the KH, I prefer even lower levels when nutrient are low. I aim for 7dKH. But that's another change, and your corals are probably adapted to your level around 9. So that was just a though
If it's feels better we've lost quite a few corals lately as well, after a move. And I can't say for sure why. That's reefkeeping sometimes. It sometimes takes time to get the tanks to do their thing and just work.
Hope things turn soon! Good luck.