Bristlenose ( waste ) POO Floating

emi93m

Member
May 4, 2015
7
0
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Sydney Australia
Does anyone know why I have Bristlenose POO floating on the surface of the Aquaruim?

I am running a 4foot by 18 x 18 300 litre with 4 BNS with 2 sponge filters tank has been running for 4 weeks now. Lots of DW java moss and caves. only feeding sparingly Zuchinni and wafers every other day?