High high Nitrates in a friend's tank-HELP

kkgaskin90

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160 high. Sho got some corals from me a week ago and they are obviously dying, and her whole tank is suffering. 145 gallons between DT and sump. What can we do? Her bf is out of town and it's his tank.
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Massive frequent water changes are the single best way to cut down on nitrates, though based on the pics I might try retesting or testing with a different brand, as if nitrates are that high there are usually a lot more visible problems.
 
Double check with a different kit, and then massive water changes once a day with RO/DI saltwater
 
I agree with the previous replies entirely.
 
50% water changes everyday, keep an eye on the Nitrates.
Start dosing Vodka. Start out at 5mls a day, after the 4th day, jump to 10mls a day. After a fe days worth of water changes, the nitrates should start coming down. After water changes and dosing, you should be able to get a handle on those Nitrates. I'd stay dosing 10-15mls a day until you know that they aren't creeping back up.
 
Thank you all! I have passed on the info and she said "won't that put them in shock?!" I told her with nitrates that high they are already in shock.
She thinks the original cause was an anemone dying (that's when things started looking angry) but unsure as she doesn't test or do her own water changes.
I'm not sure about phosphates... API read 0.25 but that's API
 
Does the tank have a refugium with macro algae or an algae truf scrubber?
In a system balanced out and stabilized by algae, high nitrates (although usually not 160ppm) could simply be a sign the algae is consume ammonia instead of nitrates for nitrogen. Which is actually a good thing.
Additionally the api nitrate test kit reads just different shades of red from 60 through the max of 160ppm. So it is very difficult to tell the difference.
To me the best thing to do would be reduce feedings, add some macro algae like cheatomorphia and let the system "heal".
my .02
 

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