Bristlenose Pleco fry acting strangely

[AdrianBru]

Hello everyone,

My Bristlenose pleco fry are acting very strangely today - they're about three weeks old and currently housed in a 50 litre quarantine tank with their father. I tested the water today and it is unchanged from previous results, ammonia 0, nitrite 1, nitrate 20. The tank is filtered by two marina i110 units which theoretically should be more than adequate. Why are all of the fry attached to the filter bodies and not feeding on the tank floor or sides as they do normally? The tank looks completely empty at first glance. Any suggestions? Has anyone experienced similar ?

 

[DoubleDutch]

Are you sure about nitrites Adrian?
That should be 0,0.

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[AdrianBru]

Are you sure about nitrites Adrian?
That should be 0,0.

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Unfortunately yes - tested this morning. I have added ammo lock but not sure whether it's any good for nitrite.

 

[AdrianBru]

Unfortunately yes - tested this morning. I have added ammo lock but not sure whether it's any good for nitrite.

Just looked at the test strips, 1 is apparently mg/ltr which is next to the zero and carries a slight warning. Test kit is esha aqua quick test.