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Old 09-14-2014, 06:55 PM   #1
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Coral problems

I have 90 gallon
Sump filtration with bio balls, 2 filter socks and UV
2 power heads
LED lighting.
Live rock and substrate
Protein skimmer

Salinity: 1.023
Nitrate 30-40 mg/l (higher than usual despite recent water change)
Nitrite 0
Alk 250
PH 7.8
Temp 79-80
Use test strips
Use stront/moly, calcium, mag, accel, and iodide
Pretty careful about not over feeding
Set up 6 months ago
Livestock: clown, sail fin tang, 2 chromis, 1 coral beauty (fairly recent), fire shrimp, snails/hermets, lost flame angel couple weeks ago

Issue: can't seem to keep coral alive. Have tried a variety of them. Some lasted longer than others. Not sure what else to do




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Old 09-14-2014, 07:14 PM   #2
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I think it would be safe to assume its because of your nitrates. IME, u shouldn't pass 10ppm for corals. How much water do u change? Which salt do you use and how often do you change your water? Also, are u using rodi water?


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Old 09-14-2014, 07:16 PM   #3
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What type of LEDs? They're not all equal. I agree with the nitrates being to high also.
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Old 09-14-2014, 08:29 PM   #4
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bio balls are a big nitrate trap
I replaced mine a while back with live rock rubble and things got better
but trates that high need attention big water changes
especially if you keep coral you need to keep up on things on a more stable time frame
i check things daily water change and sump get done weekly its almost another full time job
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Old 09-14-2014, 08:32 PM   #5
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Besides the nitrates, you are adding things you probably aren't testing for. stop all of this "Use stront/moly, calcium, mag, accel, and iodide"
All of this is in your salt mix and your parameters are most likely way out of whack.
Test strips are inaccurate. You need test kits if you want to know for sure, and not API test kits. If you want to go the API route, at least get a Salifert calcium kit.

Why are you losing fish? How long did you have the flame angel?
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Old 09-14-2014, 09:06 PM   #6
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More info:

I buy the water already made/mixed at local salt water aquarium store.
I change about 20-25 gallons a month
My LED lighting is a Current model 5103

I see your point on nitrates. Definitely needs fixed. Unfortunately I may have more than one issue I am dealing with. Part of my confusion as to the coral issue has been that the nitrates have been pretty nonexistent the whole time and only recently spiked in the last week or so. I've had coral issues before the spike when it seemed to be fine. I had some one else test the water a couple of weeks ago before the recent issue and it was fine. So now I guess I have 2 issues to solve.



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Old 09-14-2014, 09:33 PM   #7
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If the water was "fine" the corals wouldn't die.
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Old 09-14-2014, 09:35 PM   #8
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Thanks for asking. The flame just disappeared. I had it for maybe a week.


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Old 09-14-2014, 09:38 PM   #9
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Poor choice of words on my behalf. By "fine" I meant the particular things they tested for did not appear to be an issue including nitrate.


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Old 09-14-2014, 09:55 PM   #10
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Corals- Besides the main things like ammonia, nitrite, and nitrate, alkalinity is a fast killer.
Not to forget all the other things you've been adding blindly, that I mentioned earlier. I'm thinking if it isn't the nitrate, it's those things. The tiny amounts of strontium, iodine, and such that are needed are easily overdosed. I would do a series of water changes with a reef grade salt mix to dilute the above and it should correct the problem.

Fish- If you had the flame for a week it wasn't the acclimation. 40ppm nitrates probably wouldn't have killed it , nor would some extra iodine IMO. It could have been a parasite that was already on it when it arrived. How much rock do you have in the tank? can you post a picture of it?
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