What are the optimal phos and nitrate numbers ?

[Claytonsreef]

Hi randy.

What do you think are the optimal numbers for phosphate and nitrate?

I currently have mine at

Phosphate - 0.1
Nitrate 10ppm

 

[Orm Embar]

Optimal Parameters for a Coral Reef Aquarium: By Randy Holmes-Farley

[note: edited on 5/29/2022 to update the nitrate and phosphate sections with higher recommended levels.] One of the main roles of an aquarist with a coral reef aquarium is to ensure that the conditions are right for their tank inhabitants. There...

www.reef2reef.com

Having said that, it also depends on your reef - if your corals are growing well and you have no nuisance algae, then I wouldn't wory about the parameters.

 

[Randy Holmes-Farley]

I currently recommend 0.01 to 0.05 ppm phosphate and 1-10 ppm nitrate. Higher than that is much better than lower, and may be fine.