Finding nitrates

[Proteus]

I was feeding acros with AA cv along with Reef roids.. I did find that po4 jumped significantly. I stopped with the feeding. Po4 has remained steady at 0.04.
I am of coarse still using zeo food which also contains aa.
I would like to continue feeding just need to find the proper amount to feed without contributing to nutrients.
When feeding reef roids or fauna zoo I won change filter sock a hour or two after so food didn't have a chance to break down I socks

Much appreciated Mindy and Denny