Amano Shrimps Half Out Of Tank

[pete4344]

I came to do a partial water change this morning, and found 2 amano shrimps huddled in the corner with their heads out of the water. I completed the water change, and a couple of hours later found all 5 of my shrimps huddled together, half out of the water. It appears something is upsetting them.

I have checked all the main water parameters and they appear OK. The tank is planted, with added CO2 (yeast type). I have tried adding air through the Juwel venturi. The fish (zebra danios, serpae tetras and red eye tetras) all appear OK.

Does anyone have any ideas?

Thanks, Pete

 

[WILDER]

I would post this in tropical discussion more members go over there.
Check your tank temp.

 

[iSnail]

Have you added any new plants or medications in your tank recently?

 

[pippoodle]

have you checked the pipe that feeds the yeast mixture through to see if any mixture has accidently gotten into the tank

 

[pete4344]

Thanks for your replies. The only thing added to the tank recently were 4 moss balls a couple of weeks ago, as well as some plant fertiliser (Tetra Plantamin) added yesterday just after a partial water change.

I kept the venturi air on full overnight, and this morning the shrimps appear to be behaving normally. So it was possibly an air problem. I think I will do another partial water change just in case the fertiliser has built up too much for the shrimps.