zoos dying off?

[fishtk75]

My water number all the same and the zoos where growing alot.
Now I see not a thing growing on them as bad but not spreading out like before.
Is there times when some get old and dy off and you have to start with new ones?

 

[itz frank]

usually they'll won't receed. But there can be times where they stop continuing to grow. check for pests. maybe FW dip them.

 

[fishtk75]

Will do thanks you I will look.