Mysterious Shrimp Death - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 04-19-2013, 07:38 AM Thread Starter
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Mysterious Shrimp Death

I came home today to a dead PFR Shrimp. Dunno why. Occasionally, i find one dead but its rare, especially this time it was an adult, not a juvie. One thing i did do today was dose nitrates. You think this might have caused it?
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post #2 of 9 (permalink) Old 04-19-2013, 12:12 PM
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Why you dose nitrates???
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post #3 of 9 (permalink) Old 04-19-2013, 01:19 PM
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more likely Nitrogen.... which is a fertilizer.

Shrimp do not like levels greather than 30ppm nor concentrations if the dosage was not evenly mixed into the tank. Please take extra care if you are dosing the tank with inverts


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post #4 of 9 (permalink) Old 04-19-2013, 02:19 PM Thread Starter
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Haha I dosed nitrates as I have em in my planted tank. That possibly could explain what happened. Thanks!
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post #5 of 9 (permalink) Old 04-19-2013, 02:32 PM
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Neos are hardy, so it may not be nitrates. I keep them in tanks with significantly higher concentrations with no issue. But they've been acclimated over an extended period of time.

What are your other parameters? pH, GH, KH, ammonia, nitrate, nitrite, et al.

How long has the tank been cycled and running?


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post #6 of 9 (permalink) Old 04-19-2013, 03:31 PM
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Re: Mysterious Shrimp Death

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Haha I dosed nitrates as I have em in my planted tank. That possibly could explain what happened. Thanks!
I dose modified EI dry with no apparent issues, aiming for 20 ppm max. Unfortunately, as detailed in another thread, it sometimes rises to 40 ppm if the kits can be believed.

Summary: I doubt it was your dosing.

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post #7 of 9 (permalink) Old 04-19-2013, 03:43 PM Thread Starter
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Hmm then since i do not have tests for my water quality...

I might look at CO2 or O2 levels. MY GH and KH are pretty good, GH on tap is like 1 so i buff it up to 4. KH not really sure but i think its also 4. No accurate measurements. Mayb i gassed the poor guy as my fish were stressed yesterday. I must've bumped my needle valve a bit since it was off. but only by a little. ammonia should be 0, tank is well established so i would assume i have sufficient biological filtation for a 10 gallon by the ehiem 2213. But never really measured it so cannot be certain. pH drops to ~6.2 when CO2 is on. Nightime hovers around 6.8-7.0
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post #8 of 9 (permalink) Old 04-19-2013, 04:47 PM
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Re: Mysterious Shrimp Death

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Originally Posted by puopg View Post
Mayb i gassed the poor guy as my fish were stressed yesterday. I must've bumped my needle valve a bit since it was off. but only by a little.
That doesn't sound unlikely. Shrimp are more sensitive to CO2 than fish in my experience, and only a slight bump can be fatal if you're already near the line.

I could never keep shrimp long in my high tech 29g until I increased the O2 content by aiming the spraybar up at an angle and increasing flow to remove dead spots. I also began attempting to limit nitrates to a range of 10-20 ppm, not always successfully. Now I have a healthy breeding colony of Supreme Red neos.

I had to increase CO2 flow to offset atmospheric losses. A nice side effect of increasing O2 is that the inverts can tolerate higher CO2 levels too, not just to compensate for the losses, so your plants should do better.

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post #9 of 9 (permalink) Old 04-23-2013, 05:30 AM Thread Starter
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Ok yea i definitely think it is that. I changed my filter outflow on saturday and today found another guy tapping out. Im going back to my original setup however, im sad since i use CO2 so fast this way.
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