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  #21  
Old 01-05-2015, 01:52 AM
jordanc_17 jordanc_17 is offline
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Quote:
Originally Posted by edikpok View Post
I use a good-old hydrometer.... Every now and then I bring it to the store to make sure the readings are correct...
There's your answer. Use another set of test kits (lfs, or a buddies) if you can.
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  #22  
Old 01-05-2015, 01:59 AM
input80 input80 is offline
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Quote:
Originally Posted by gregzz4 View Post
Ooooo, invest in a refractometer and some cal solution
Great money spent for sure
+1 for sure, using 3 different hydrometers & even checking with the LFS, they were actually set around 1.030.
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  #23  
Old 01-05-2015, 03:15 AM
edikpok edikpok is offline
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Thank you all for your input. Calibrated refractometer showed 1.025...

A quick update: did 2 20% water changes using reef crystals (on consecutive days), and changed the light bulbs just in case. No visible new tissue recession in non-trumpet corals. In fact, many of them opened more in the past 2 days than I've ever seen them before.

Candy canes seem to open quite a bit although tissue recession is still visible (not in all canes, but I have over 100 heads...). It definitely does not look like the trumpets with severe tissue necrosis will recover, but I am not sure if new trumpets are losing their tissue. I will probably do a 10% water change in a day or two...

Anything else that could possibly cause a quick tissue necrosis in a stable system? I don't think that I solved the mystery of what caused the quick tissue necrosis in the canes, but I think that the new salt might help it a little

Amonia, nitrite and nitrate are still at 0. pH=8.4, alkalinity=9 and calcium is at 400
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