Probably an obvious answer

[cristispice]

This doesn’t apply to me yet, but has me curious.

if you run a SPS dominate tank, my understanding it is good to have some measurable nitrates.
if 95% of your clean up crew are sensitive to nitrates... how does that work?

do you just not have an invert CUC? No shrimp? How do you keep detritus and algae under control?

 

[Biglew11]

measurable nutrients doesn't mean that they are high enough to harm other inverts. sps are some of the most sensitive inverts in a tank.

nitrates in an sps dominate tank fall around 2-5 ppm phosphates around .01-.03ppm.

its more about having nutrition (food) for the coral to feed on, and those 2 are easy to measure. if you feed your tank heavy with a high bioload with heavy export and still have zero nutrients your sps are still probably getting enough nutrition,. if you feed very lightly and measure 0 nutrients stuff is going to starve.

 

[laverda]

Never heard nitrates are a problem for a CUC. In my experience they are not. My nitrates are 20-25 and I don't have a problem with my clean up crew which includes shrimp, urchins, snails and a few crabs.

 

[ZoWhat]

SPS is the Devil playing tricks on you.

RUN! ....to LPS