Feeding 6 fish

[Codeblack88]

Hi I have a 3 year old tank that is constantly having phosphate spikes. I think that the spikes are due to how much I am feeding but I don't know how much I should reduce my feeding by. I currently have 5 fish (niger trigger, arceye hawkfish, two clownfish, and a bicolor gramma) and am feeding a full cube of frozen brine shrimp. How much should I reduce this by?

Tank specs:
32 gal bio cube
pH 8.4
Ammonia : 0
Nitrites: 0
Nitrates: 0.23
Phosphates: 0.9

Thank you for any help!

 

[Jekyl]

What ever they can eat in 30 seconds. Probably half a cube

 

[Sam816]

how's ur trigger with CuC? tolerates them or obliterates them? you can use some CuC or mollies to pick up the smaller leftover food.

 

[Codeblack88]

how's ur trigger with CuC? tolerates them or obliterates them? you can use some CuC or mollies to pick up the smaller leftover food.

If i dont over feed he starts to pick at them and flip over my snails

 

[Codeblack88]

What ever they can eat in 30 seconds. Probably half a cube

Ok thank you