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PostPosted: Nov 25th, '17, 00:46 
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New to this board. So hope this is right area to post.
Have a aquaponics system with tilapia doing well for over a year.
Had some fish die overnight and went ahead and fillet the fish and froze them. Testing the water discovered high nitrate levels. So my question is if it safe to eat fish that died from high nitrate levels?


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PostPosted: Nov 27th, '17, 10:27 
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High nitrates don't tend to kill fish so I imagine it's probably something else. So long as you got them quickly it should be ok. Wouldn't want to eat a fish that had been festering in warm water for very long.

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PostPosted: Nov 27th, '17, 22:05 
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I'd suggest you do more extensive water chemistry tests. Nitrate is the end result of proper nitrogen cycle. The plants take over from there.

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