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Strange or not so strange Amano behavior?

Archo

Seedling
Joined
22 Jun 2010
Messages
3
Location
United Kingdom
Hey everyone,

I'm puzzled to why my Amano shrimp are jumping ship... 0.o

I recently added 6 small/medium Amano shrimp to my high tech planted aquarium. There is no other livestock in the tank and all the water tests seem to look fine. The tank is open topped and the water level is around 30mm from the top, is this just the shrimp being curious and jumping out?

I'm not sure if the external filter outflow is too powerful for the shrimp or would this even be a factor?

Water test before water change
PH – 7.0
Ammonia – 0ppm
Nitrate - 20ppm
Nitrite - 0ppm
KH - 5ppm

The aquarium is 10 months old and went through a 8 week cycle period before adding any plants etc.

Thanks for the help
Archo
 
2 have jumped out so far 🙁 The others look, well I can't really tell. They seem happy foraging through the Riccia. I'm going to leave the Co2 and lights off tomorrow and see how that goes. Thanks for the help 🙂
 
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