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Old 08-26-2010, 04:13 PM   #51
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Originally Posted by MarkW19 View Post
Hi Kurt,

I'm disappointed that the nitrites wouldn't be the problem, I thought I'd cracked it. Those levels of nitrites shouldn't be in my PWC water though, should they?
Correct... you shouldn't be seeing ANY nitrites in the water, so something is wrong. While I'm no marine biologist, I don't think those levels of nitrites though are enough to be the instant killer that you've seen.

HOWEVER... with the test showing nitrites, I would start to suspect some kind of contamination of your water that could just be showing up on the nitrite test - but isn't actually nitrites.

I'm with you - I doubt it's your salt. It's not like Seachem is some no-name brand, and the fact that you've been using it for 6 years with no problems seems to point elsewhere.

Along the lines of what you said about the buckets, if it was me, I'd go buy new buckets and a new powerhead (or at least a different one) and start "fresh" with new equipment to rule out that possibility.

Quote:
... When I said "test strip", I meant the results strip where you compare the colour of the water, with the strip.
OH... nevermind!
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Old 08-26-2010, 05:56 PM   #52
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Maybe those nitrites are pointing to a dangerous nitrite compound?

What kind of plastic are you using for the water containment? Check your powerhead for rust. I know someone here awhile back had some deaths and found the stainless steel shaft in his powerhead had rusted really bad.

Matt
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Old 08-26-2010, 11:30 PM   #53
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Look, It has long been thought that nitrites kill fish....Wrong, the latest research shows that nitrite only follows the break down of ammonia and it is the ammonia that kills fish. We thought that nitrite kills fish, but the real killer is ammonia. There can be no "nitrite" without ammonia. The fish died bacause of ammonia effects, not nitrite. We thought it was nitrite because by the time the fish died only the nitrite was showing up on our test...
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Old 08-27-2010, 02:22 AM   #54
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The fish died bacause of ammonia effects, not nitrite. We thought it was nitrite because by the time the fish died only the nitrite was showing up on our test...
Well then, I guess that clears that all up.
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Old 08-27-2010, 03:28 AM   #55
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Look, It has long been thought that nitrites kill fish....Wrong, the latest research shows that nitrite only follows the break down of ammonia and it is the ammonia that kills fish. We thought that nitrite kills fish, but the real killer is ammonia. There can be no "nitrite" without ammonia. The fish died bacause of ammonia effects, not nitrite. We thought it was nitrite because by the time the fish died only the nitrite was showing up on our test...
I wasnt suggesting nitrites formed from ammonia, but nitrites from something not commonly found in reef tanks. Its strange to have any nitrites in freshly made salt water. Seems to suggest some kind of contamination of the salt, or the water.

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Old 08-27-2010, 05:21 AM   #56
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I stand by my statements.
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Old 08-27-2010, 07:39 AM   #57
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Understood that nitrites aren't immediately fatal to fish, and that they have to come from ammonia.

But, in the case of my PWC water, this has shown 0 ammonia consistently, and obviously the bacteria required to convert ammonia into nitrite aren't in my bucket!

I'm with Kurt/mrg02d: I think contamination is a possibility, that's simply showing up as nitrite (but it isn't). I'm going to get a new powerhead/heater/food-safe bucket (had these food a few years now, although I always regularly/carefully clean them) to rule that out.

I'll report back...
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Old 08-27-2010, 04:30 PM   #58
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You are on the right track. All I was saying is that nitrite is not your problem and that you have to look beyond that to find the source of your problem.
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