From your account, I speculate that the chlorine that killed your fish harmed your plants too. Thus they have become weaker and photosynthesize less which resulted in unabsorbed nutrients in the water which caused the algae bloom.
You don't usually have to dose Phosphates as normal feeding of fish, fish waste, decomposing matter will provide ample phosphates. Dose only when you have a low bioload and many plants.
Is your tank heavily planted and/or have nutrient-hungry plants?
You don't usually have to dose Phosphates as normal feeding of fish, fish waste, decomposing matter will provide ample phosphates. Dose only when you have a low bioload and many plants.
Is your tank heavily planted and/or have nutrient-hungry plants?
