copephod is gone

[alum]

I've been observe lately in my sump there is no copephod or amphipods again, its start from almost all caulerpa being withered in the sump.
Anyone know why ?? I check PH KH is still normal.

[alum]

There was many copephod or amphipods before caulerpa start withered.
now copephod or amphipods dan caulerpa is gone :confused::confused::confused:

is that relate with bacteria?

[SantaMonica]

Pods eat algae, so with less caulerpa there is less food for pods.