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Dying coral and some look good??

A

amlsml

My red sea max tank has been going great for the past few months. It is 75 gallons and I do a weekly 20 gallon water change with clear sea salt and ro water. I check the main parameters and so far so good. I also dose Bionic at 1 once a day with both parts. Last week i did a water change with Ro water I made a week and half ago. My green hammer, kenya tree, frogspawn all look really bad. My cnadrian coral died in 5 days. I checked my water parameters, no amonia, nitrates, nitrites,Phosphates were in line, Ph 8.4 alk a little high but not off the chart, Calcium was 400 ppm, the magnesium is a little low and my salnity is a little suspect, it tested 1.019 but my tester read 1.023. I did another 25 gallon change today and raised the salinity to 1.022, what could be killing my corals, they were doing great a week ago, fish are fine but i did lose a cleaner shrimp, i suspected to a bad molt. any suggestions?? thanks
 
W

Whitebird1

Everything seems in line, look for other reasons, we just had a cold snap, heater working? Run Carbon and Skim Heavy and the Water changes are standard till you can figure out what the cause could be.
 
H

Henrye718

Take a good amount of your tank water to a trusted reef type store and have them rerun all your tests, every brand of tests kit almost has been known to NOT work right either do to age, bad batches or just plain they dont work good peroid do to a poor product. Since you have so many things heading south at once I would say this not a coincidence and you need to double check everything one of your parameters is off for sure.
 
M

mgonz

what are you using to measure your salinity?

also when you say not looking good can you please be more specific. is the tissue coming offthe skeleton? are the corals begining to bleach?
 
A

amlsml

The green hammer is starting to disappear in some of the heads, the heads are all white and bony wth no green hammers. the cnidairn died totally bleached out, the kenya trees look wilted and are lying on the tank floor. The make up water was tested with a plastic salinity meter that I had calibrated. I used the same one for the last few weeks so I can't believe I was too far off. I checked the temp and it looks like the tank is around 87 degrees, I will bring it down slowly to see. I added a bag of carbon to the sump and my mushrooms and candy canes look better, the xenia trees are all still wilted. All parameters seem right on. Calcium, magnesium, Ph 8.4, No nitrates, nitrites,ammonia. What is the best test for corals?? fish are doing great by the way??
 
M

mgonz

I might think the tank temp might be stressing them out. 87 is a bit high. Most tanks are kept between 77 and 80. Not totaly sure that the temp would completly do it but it is def not helping the situation. If you are using a coralife digital stat to check temp they are usually off by 2 to 3 degrees which would put you at almost 90 which is extremely high. Again not 100% sure that that's what's doing it.
 
JRWOHLER

JRWOHLER

mgonz said:
I might think the tank temp might be stressing them out. 87 is a bit high. Most tanks are kept between 77 and 80. Not totaly sure that the temp would completly do it but it is def not helping the situation. If you are using a coralife digital stat to check temp they are usually off by 2 to 3 degrees which would put you at almost 90 which is extremely high. Again not 100% sure that that's what's doing it.
Click to expand...

Mine was off by 10 degrees made me think heater wasn't working well easy mistake to make and very destructive.
 
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