Dead Amanos - The Planted Tank Forum
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post #1 of 4 (permalink) Old 07-17-2014, 05:27 AM Thread Starter
Algae Grower
Join Date: Apr 2014
Location: Bay Area, California
Posts: 116
Dead Amanos

Two dead amanos found this evening. Not sure what happened...

I've been dosing ferts via EI method. Been doing this for three weeks and haven't had an issue.

I do CO2 injection - it's pretty high and my drop checker is light green / yellow. But I've kept it steady for several weeks now, so I didn't worry too much about it.

HOWEVER: yesterday, I did remove my HOB filter. I still have an Eheim 2217 + Eheim 2213 still on the 30 gallon tank, so it's definitely enough filtration. My water parameters are fine - 0 nitirites/ammonia (nitrates varying with how long I'm into my week of EI dosing - but nothing out of norm). My best guess is that the HOB filter was providing all the water agitation (which diffused some of the CO2) and without the water agitation now, my shrimp died of CO2 overdose.

Does that sound possible?

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post #2 of 4 (permalink) Old 07-17-2014, 06:49 AM
Planted Tank Enthusiast
Join Date: Oct 2012
Location: california
Posts: 727
amanos are a little touchy. i've drip acclimated some amanos for about an hour once and they still died on me.
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post #3 of 4 (permalink) Old 07-17-2014, 07:34 AM
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Join Date: Apr 2014
Location: Phoenix
Posts: 387
I'm still pretty new...been doing planted tanks for almost a year but my hi-tech tank has nothing but amanos and mine are pretty hardy. I've blasted them with hygrogen peroxide during 1-2 algae punch and they all lived.

The only time any ever died was when I did a major replanting in the evening and didn't do a WC after. So I caused a temporary ammonia spike moving stuff around, and by the morning 2 had died but the others were still kicking.

Did you move any plants or substrate?

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post #4 of 4 (permalink) Old 07-17-2014, 06:53 PM
Algae Grower
Join Date: May 2014
Location: Toronto
Posts: 24
It is definitely possible that the removal of the ac70 agitation allowed the co2 to become more concentrated than with it. Try creating a similar agitation with your canisters or drop the amount of co2 added to get the same concentrations with lower agitation.

Although with lower agitation it takes longer to get up to a stable level of co2. Lower agitation also results in less O2 in the water meaning you can't turn the co2 up as much. The more O2 in the water, the higher you can have your concentration of co2.

IMHO this is the trickiest part of co2 injection. Getting the balance right between co2 and O2 to allow both your fish and plants to thrive.

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