can compost manure decrease plankton growth?,PLS i need answer.

phytoplantok are natural fish food in the pond,so if fertilizer is applied to the pond definitely it's population increased and the yied of fish increased

<p>In a well-managed fish pond with enough oxygen, what is the usual intended effect of fertilizing with an appropriate amount of compost manure on phytoplankton and fish yield?</p>

WAEC SSCE

Phytoplankton population decreases as fish yield decreases

Phytoplankton population decreases while fish yield increases

Phytoplankton population increases while fish yield decreases

Phytoplankton population increases as fish yield increases

Earlier discussion